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Major League Baseball (MLB) is a
professional baseball Professional baseball is organized baseball in which players are selected for their talents and are paid to play for a specific team or club system. It is played in baseball league, leagues and associated farm teams throughout the world. Mod ...
organization and the oldest major professional sports league in the world. MLB is composed of 30 total teams, divided equally between the
National League The National League of Professional Baseball Clubs, known simply as the National League (NL), is the older of two leagues constituting Major League Baseball (MLB) in the United States and Canada, and the world's oldest extant professional team s ...
(NL) and the
American League The American League of Professional Baseball Clubs, known simply as the American League (AL), is one of two leagues that make up Major League Baseball (MLB) in the United States and Canada. It developed from the Western League, a minor league ...
(AL), with 29 in the United States and 1 in Canada. The NL and AL were formed in 1876 and 1901, respectively. Beginning in 1903, the two leagues signed the National Agreement and cooperated but remained legally separate entities until 2000, when they merged into a single organization led by the
Commissioner of Baseball The Commissioner of Baseball is the chief executive officer of Major League Baseball (MLB) and the associated Minor League Baseball (MiLB) – a constellation of leagues and clubs known as "organized baseball". Under the direction of the Commiss ...
. MLB is headquartered in
Midtown Manhattan Midtown Manhattan is the central portion of the New York City borough of Manhattan and serves as the city's primary central business district. Midtown is home to some of the city's most prominent buildings, including the Empire State Buildin ...
. It is also included as one of the
major professional sports leagues in the United States and Canada The major professional sports leagues in the United States and Canada commonly refer to the highest men's professional competitions of team sports in those countries. The four leagues traditionally included in the definition are Major League Bas ...
. Baseball's first all-professional team, the
Cincinnati Red Stockings The Cincinnati Red Stockings of were baseball's first all-professional team, with ten salaried players. The Cincinnati Base Ball Club formed in 1866 and fielded competitive teams in the National Association of Base Ball Players (NABBP) 1867†...
, was founded in 1869. Before that, some teams had secretly paid certain players. The first few decades of professional baseball were characterized by rivalries between leagues and by players who often jumped from one team or league to another. The period before 1920 was the
dead-ball era In baseball, the dead-ball era was the period from around 1900 to the emergence of Babe Ruth as a power hitter in 1919, when he hit a then-major league record 29 home runs; only three players since 1890 had even hit 20. This era was characterized ...
, when
home run In baseball, a home run (abbreviated HR) is scored when the ball is hit in such a way that the batter is able to circle the bases and reach home plate safely in one play without any errors being committed by the defensive team. A home run i ...
s were rarely hit. Professional baseball in the United States survived the
Black Sox Scandal The Black Sox Scandal was a Major League Baseball game-fixing scandal in which eight members of the Chicago White Sox were accused of throwing the 1919 World Series against the Cincinnati Reds in exchange for money from a gambling syndicate l ...
, a conspiracy to fix the
1919 World Series The 1919 World Series was the championship series in Major League Baseball for the 1919 season. The 16th edition of the World Series, it matched the American League champion Chicago White Sox against the National League champion Cincinnati Reds. ...
. The sport rose in popularity in the 1920s and survived potential downturns during the
Great Depression The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
and
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
. Shortly after the war,
Jackie Robinson Jack Roosevelt Robinson (January 31, 1919 – October 24, 1972) was an American professional baseball player who became the first African American to play in Major League Baseball (MLB) in the modern era. Robinson broke the baseball color line ...
broke baseball's color barrier. The 1950s and 1960s were a time of club expansion and relocation for the AL and NL. Modern stadiums with
artificial turf Artificial turf is a surface of synthetic fibers made to look like natural grass. It is most often used in arenas for sports that were originally or are normally played on grass. However, it is now being used on residential lawns and commer ...
surfaces began to change the game in the 1970s and 1980s. Home runs dominated the game during the 1990s, and media reports disclosed the use of
anabolic steroid Anabolic steroids, also known more properly as anabolic–androgenic steroids (AAS), are steroidal androgens that include natural androgens like testosterone (medication), testosterone as well as synthetic androgens that are structurally related ...
s among MLB players in the mid-2000s. In 2006, an investigation produced the
Mitchell Report The ''Report to the Commissioner of Baseball of an Independent Investigation into the Illegal Use of Steroids and Other Performance Enhancing Substances by Players in Major League Baseball'', informally known as the Mitchell Report, is the res ...
, which implicated many players in the use of performance-enhancing substances, including at least one player from each team. Each team plays 162 games per season, and six teams in each league advance to a four-round postseason tournament that culminates in the
World Series The World Series is the annual championship series of Major League Baseball (MLB) in the United States and Canada, contested since 1903 between the champion teams of the American League (AL) and the National League (NL). The winner of the World ...
, a
best-of-seven There are a number of formats used in various levels of competition in sports and games to determine an overall champion. Some of the most common are the ''single elimination'', the ''best-of-'' series, the ''total points series'' more commonly k ...
championship series between the two league champions that dates back to 1903. Baseball games are broadcast on television, radio, and the internet throughout North America and in several other countries. MLB has the highest total season attendance of any sports league in the world with more than 69.6 million spectators in 2018. MLB also oversees Minor League Baseball, which comprises lower-tier teams affiliated with the major league clubs. MLB and the
World Baseball Softball Confederation World Baseball Softball Confederation (WBSC; french: Confédération internationale de baseball et softball) is the world governing body for the sports of baseball, softball, and Baseball5. It was established in 2013 by the merger of the Inter ...
jointly manage the international
World Baseball Classic The World Baseball Classic (WBC) is an international baseball tournament sanctioned from 2006 to 2013 by the International Baseball Federation (IBAF) and after 2013 by World Baseball Softball Confederation (WBSC) in partnership with Major Leagu ...
tournament. MLB is the second-wealthiest professional sport league by revenue after the
National Football League The National Football League (NFL) is a professional American football league that consists of 32 teams, divided equally between the American Football Conference (AFC) and the National Football Conference (NFC). The NFL is one of the ...
(NFL). Since the first World Series in 1903, the
New York Yankees The New York Yankees are an American professional baseball team based in the Boroughs of New York City, New York City borough of the Bronx. The Yankees compete in Major League Baseball (MLB) as a member club of the American League (AL) Amer ...
have the most championships with 27. The
Houston Astros The Houston Astros are an American professional baseball team based in Houston, Texas. The Astros compete in Major League Baseball (MLB) as a member club of the American League (AL) West division, having moved to the division in 2013 after ...
are the reigning World Series champions, as they defeated the
Philadelphia Phillies The Philadelphia Phillies are an American professional baseball team based in Philadelphia. They compete in Major League Baseball (MLB) as a member of the National League (NL) National League East, East division. Since 2004, the team's home sta ...
4–2 in the 2022 World Series, to mark the end of the 2022 season.


Organizational structure

MLB is governed by the
Major League Baseball Constitution The Major League Baseball Constitution is a document under which the day-to-day operation of Major League Baseball is conducted. It was originally drafted in 1903 as the Constitution of the National League and has since been amended several times, ...
. This document has undergone several incarnations since its creation in 1876. Under the direction of the
Commissioner of Baseball The Commissioner of Baseball is the chief executive officer of Major League Baseball (MLB) and the associated Minor League Baseball (MiLB) – a constellation of leagues and clubs known as "organized baseball". Under the direction of the Commiss ...
, MLB hires and maintains the sport's umpiring crews, and negotiates marketing, labor, and television contracts. MLB maintains a unique, controlling relationship over the sport, including most aspects of Minor League Baseball. This is due in large part to the 1922
U.S. Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that involve a point o ...
ruling in ''
Federal Baseball Club v. National League ''Federal Baseball Club v. National League'', 259 U.S. 200 (1922), is a case in which the U.S. Supreme Court ruled that the Sherman Antitrust Act did not apply to Major League Baseball. Background After the Federal League folded in 1915, most of ...
'', which held that baseball is not
interstate commerce The Commerce Clause describes an enumerated power listed in the United States Constitution ( Article I, Section 8, Clause 3). The clause states that the United States Congress shall have power "to regulate Commerce with foreign Nations, and amo ...
and therefore not subject to federal
antitrust Competition law is the field of law that promotes or seeks to maintain market competition by regulating anti-competitive conduct by companies. Competition law is implemented through public and private enforcement. It is also known as antitrust l ...
law; MLB is the only league that has such a status, and has not faced any competition since this case. This ruling has been weakened only slightly in subsequent years. The weakened ruling granted more stability to the owners of teams and has resulted in values increasing at double-digit rates. There were several challenges to MLB's primacy in the sport, with notable attempts to establish competing leagues occurring during the late 1800s, from 1913 to 1915 with the short-lived
Federal League The Federal League of Base Ball Clubs, known simply as the Federal League, was an American professional baseball league that played its first season as a minor league in 1913 and operated as a "third major league", in competition with the e ...
, and in 1960 with the aborted
Continental League The Continental League of Professional Baseball Clubs (known as the Continental League or CL) was a proposed third major league for baseball in the United States and Canada. The league was announced in 1959 and scheduled to begin play in the 19 ...
. The chief executive of MLB is the commissioner, currently
Rob Manfred Robert Dean Manfred Jr. (born September 28, 1958) is an American lawyer and business executive who is serving as the tenth Commissioner of Baseball, commissioner of Major League Baseball. He previously served as MLB's chief operating officer. Man ...
. The deputy commissioner of baseball administration and chief legal officer is currently Dan Halem. There are seven other executives: executive vice president and general counsel, chief operations and strategy officer, chief communications officer, chief financial officer and senior advisor, executive vice president and chief marketing officer, chief revenue officer, and chief baseball development officer. The multimedia branch of MLB is
MLB Advanced Media MLB Advanced Media (MLBAM) is a limited partnership of the club owners of Major League Baseball (MLB) based in New York City and is the Internet and interactive branch of the league. Robert Bowman, former president and CEO of MLBAM, indicated ...
, which is based in New York City. This branch oversees
MLB.com MLB.com is the official site of Major League Baseball and is overseen by Major League Baseball Advanced Media, L.P. (a subsidiary of MLB). MLB.com is a source of baseball-related information, including baseball news, statistics, and sports column ...
and each of the 30 teams' websites. Its charter states that MLB Advanced Media holds editorial independence from the league, but it is under the same ownership group and revenue-sharing plan. MLB Productions is a similarly structured wing of the league, focusing on video and traditional broadcast media. MLB also owns 67 percent of
MLB Network The MLB Network is an American television sports channel dedicated to baseball. It is primarily owned by Major League Baseball, with Warner Bros. Discovery through its sports unit, Comcast's NBC Sports Group, Charter Communications, and Cox C ...
, with the other 33 percent split between several cable operators and satellite provider
DirecTV DirecTV (trademarked as DIRECTV) is an American multichannel video programming distributor based in El Segundo, California. Originally launched on June 17, 1994, its primary service is a digital satellite service serving the United States. It ...
. It operates out of studios in
Secaucus, New Jersey Secaucus ( ) is a town in Hudson County, New Jersey, United States. As of the 2010 United States census, the town's population was 16,264, From 1901 to 1960, the American and National Leagues fielded eight teams apiece. In the 1960s, MLB expansion added eight teams, including the first non-U.S. team (the
Montreal Expos The Montreal Expos (french: link=no, Les Expos de Montréal) were a Canadian professional baseball team based in Montreal, Quebec. The Expos were the first Major League Baseball (MLB) franchise located outside the United States. They played in t ...
). Two teams (the
Seattle Mariners The Seattle Mariners are an American professional baseball team based in Seattle. They compete in Major League Baseball (MLB) as a member club of the American League (AL) American League West, West division. The team joined the American League ...
and the
Toronto Blue Jays The Toronto Blue Jays are a Canadian professional baseball team based in Toronto. The Blue Jays compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. Since 1989, the team has played its home games ...
) were also added in the 1970s. From 1969 through 1993, each league consisted of an East and West Division. In 1993, the National League expanded with two teams, the
Florida Marlins The Miami Marlins are an American professional baseball team based in Miami. The Marlins compete in Major League Baseball (MLB) as a member club of the National League (NL) East division. The club's home ballpark is LoanDepot Park. The franc ...
and the
Colorado Rockies The Colorado Rockies are an American professional baseball team based in Denver. The Rockies compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. The team plays its home baseball games at Coors Fie ...
, to even up the number of teams in both leagues. A third division, the Central Division, was formed in each league in 1994. Until 1996, the two leagues met on the field only during the
World Series The World Series is the annual championship series of Major League Baseball (MLB) in the United States and Canada, contested since 1903 between the champion teams of the American League (AL) and the National League (NL). The winner of the World ...
and the
All-Star Game An all-star game is an exhibition game that purports to showcase the best players (the "stars") of a sports league. The exhibition is between two teams organized solely for the event, usually representing the league's teams based on region or div ...
. Regular-season
interleague play Interleague play in Major League Baseball refers to regular-season baseball games played between an American League (AL) team and a National League (NL) team. Interleague play was first introduced during the 1997 Major League Baseball season. Pri ...
was introduced in 1997. In March 1995, two new franchises, the
Arizona Diamondbacks The Arizona Diamondbacks (colloquially known as the D-backs) are an American professional baseball team based in Phoenix. The Diamondbacks compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. The f ...
and Tampa Bay Devil Rays (now known as the
Tampa Bay Rays The Tampa Bay Rays are an American professional baseball team based in St. Petersburg, Florida. The Rays compete in Major League Baseball (MLB) as a member club of the American League (AL) American League East, East division. Since its inception ...
), were awarded by MLB, which began play in 1998. This addition brought the total number of franchises to 30. In early 1997, MLB decided to assign one new team to each league: Tampa Bay joined the AL and Arizona joined the NL. The original plan was to have an odd number of teams in each league (15 per league, with five in each division), but in order for every team to be able to play daily, this would have required interleague play to be scheduled throughout the entire season. However, it was unclear at the time if the interleague play would continue after the 1998 season, as it had to be approved by the players' union. For this and other reasons, it was decided that both leagues should continue to have an even number of teams, and therefore, one existing club would have to switch leagues. The
Milwaukee Brewers The Milwaukee Brewers are an American professional baseball team based in Milwaukee. They compete in Major League Baseball (MLB) as a member club of the National League (NL) National League Central, Central division. The Brewers are named for t ...
agreed in November 1997 to move from the AL to the NL, thereby making the NL a 16-team league. At the same time, the
Detroit Tigers The Detroit Tigers are an American professional baseball team based in Detroit. The Tigers compete in Major League Baseball (MLB) as a member of the American League (AL) Central division. One of the AL's eight charter franchises, the club was f ...
agreed to move from the AL East to the AL Central (to replace Milwaukee), with the expansion Tampa Bay Devil Rays joining the AL East. Later, when the
Houston Astros The Houston Astros are an American professional baseball team based in Houston, Texas. The Astros compete in Major League Baseball (MLB) as a member club of the American League (AL) West division, having moved to the division in 2013 after ...
changed ownership prior to the 2013 season, the team moved from the NL Central to the AL West, resulting in both leagues having three divisions of five teams each and allowing all teams to have a more balanced schedule. Interleague play is now held throughout the season.MLB required the Astros to accept this move as a condition of approving their sale to
Jim Crane James Robert Crane (born January 17, 1954) is an American businessman from Houston, Texas. Crane is chairman and chief executive of Crane Capital Group, Crane Worldwide Logistics, and Crane Freight and Shipping. He is also the owner and chairma ...
.
In 2000, the AL and NL were dissolved as legal entities, and MLB became a single, overall league ''de jure'', similar to the
National Football League The National Football League (NFL) is a professional American football league that consists of 32 teams, divided equally between the American Football Conference (AFC) and the National Football Conference (NFC). The NFL is one of the ...
(NFL),
National Basketball Association The National Basketball Association (NBA) is a professional basketball league in North America. The league is composed of 30 teams (29 in the United States and 1 in Canada) and is one of the major professional sports leagues in the United S ...
(NBA) and
National Hockey League The National Hockey League (NHL; french: Ligue nationale de hockey—LNH, ) is a professional ice hockey league in North America comprising 32 teams—25 in the United States and 7 in Canada. It is considered to be the top ranked professional ...
(NHL)—albeit with two components called "leagues" instead of "conferences". The same
rules Rule or ruling may refer to: Education * Royal University of Law and Economics (RULE), a university in Cambodia Human activity * The exercise of political or personal control by someone with authority or power * Business rule, a rule pert ...
and
regulations Regulation is the management of complex systems according to a set of rules and trends. In systems theory, these types of rules exist in various fields of biology and society, but the term has slightly different meanings according to context. For ...
are used in both leagues, with one former exception: the AL operated under the
designated hitter The designated hitter (DH) is a baseball player who bats in place of another position player, most commonly the pitcher. The position is authorized by Major League Baseball Rule 5.11. It was adopted by the American League in 1973 and later by th ...
(DH) rule, while the NL did not. This difference in rules between leagues was unique to MLB, as the other major professional sports leagues in the U.S. and Canada have one set of rules for all teams. In 2020, the
National League The National League of Professional Baseball Clubs, known simply as the National League (NL), is the older of two leagues constituting Major League Baseball (MLB) in the United States and Canada, and the world's oldest extant professional team s ...
(NL) used the designated hitter (DH) rule for the first time. As part of the settlement of the
2021–22 Major League Baseball lockout The 2021–22 Major League Baseball lockout was the ninth work stoppage in Major League Baseball (MLB) history. It began at 12:01 a.m.  EST on December 2, 2021, after MLB owners voted unanimously to enact a lockout upon the expiration o ...
, this change was made permanent thus making the rules in the two leagues identical.


Teams

''An asterisk (*) denotes a relocation of a franchise. See respective team articles for more information.''


History


Founding

In the 1860s, aided by soldiers playing the game in camp during the
Civil War A civil war or intrastate war is a war between organized groups within the same state (or country). The aim of one side may be to take control of the country or a region, to achieve independence for a region, or to change government policies ...
, "New York"-style baseball expanded into a national game and spawned baseball's first governing body, the
National Association of Base Ball Players The National Association of Base Ball Players (NABBP) was the first organization governing American baseball. (The sport was spelled with two words in the 19th century.) The first convention of sixteen New York City area clubs in 1857 effecti ...
(NABBP). The NABBP existed as an amateur league for 12 years. By 1867, more than 400 clubs were members. Most of the strongest clubs remained those based in the Northeastern United States. For
professional baseball Professional baseball is organized baseball in which players are selected for their talents and are paid to play for a specific team or club system. It is played in baseball league, leagues and associated farm teams throughout the world. Mod ...
's founding year, MLB uses the year 1869—when the first professional team, the
Cincinnati Red Stockings The Cincinnati Red Stockings of were baseball's first all-professional team, with ten salaried players. The Cincinnati Base Ball Club formed in 1866 and fielded competitive teams in the National Association of Base Ball Players (NABBP) 1867†...
, was established. A schism developed between professional and amateur ballplayers after the founding of the Cincinnati club. The NABBP split into an amateur organization and a professional organization. The
National Association of Professional Base Ball Players The National Association of Professional Base Ball Players (NAPBBP), often known simply as the National Association (NA), was the first fully- professional sports league in baseball. The NA was founded in 1871 and continued through the 1875 se ...
, often known as the National Association (NA), was formed in 1871. Its amateur counterpart disappeared after only a few years. The modern
Chicago Cubs The Chicago Cubs are an American professional baseball team based in Chicago. The Cubs compete in Major League Baseball (MLB) as part of the National League (NL) Central division. The club plays its home games at Wrigley Field, which is located ...
and
Atlanta Braves The Atlanta Braves are an American professional baseball team based in the Atlanta metropolitan area. The Braves compete in Major League Baseball (MLB) as a member club of the National League (NL) National League East, East division. The Braves ...
franchises trace their histories back to the National Association of Professional Base Ball Players in the 1870s. In 1876, the National League of Professional Base Ball Clubs (later known as the
National League The National League of Professional Baseball Clubs, known simply as the National League (NL), is the older of two leagues constituting Major League Baseball (MLB) in the United States and Canada, and the world's oldest extant professional team s ...
or NL) was established after the NA proved ineffective. The league placed its emphasis on clubs rather than on players. Clubs could now enforce player contracts, preventing players from jumping to higher-paying clubs. Clubs were required to play the full schedule of games instead of forfeiting scheduled games when the club was no longer in the running for the league championship, which happened frequently under the NA. A concerted effort was made to curb gambling on games, which was leaving the validity of results in doubt. The first game in the NL—on Saturday, April 22, 1876 (at
Jefferson Street Grounds Jefferson Street Grounds was a baseball field located in Philadelphia, Pennsylvania. It was also known as Jefferson Park and Athletics Park. It was home to three different professional baseball teams, competing in three different leagues. Notably ...
in
Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...
)—is often pointed to as the beginning of MLB. The early years of the NL were tumultuous, with threats from rival leagues and a rebellion by players against the hated "reserve clause", which restricted the free movement of players between clubs. Teams came and went; 1882 was the first season where the league's membership was the same as the preceding season's, and only four franchises survived to see 1900. Competitor leagues formed regularly and also disbanded regularly. The most successful was the
American Association American Association may refer to: Baseball * American Association (1882–1891), a major league active from 1882 to 1891 * American Association (1902–1997), a minor league active from 1902 to 1962 and 1969 to 1997 * American Association of Profe ...
(1882–1891), sometimes called the "beer and whiskey league" for its tolerance of the sale of alcoholic beverages to spectators. For several years, the NL and American Association champions met in a postseason championship series—the first attempt at a
World Series The World Series is the annual championship series of Major League Baseball (MLB) in the United States and Canada, contested since 1903 between the champion teams of the American League (AL) and the National League (NL). The winner of the World ...
. The two leagues merged in 1892 as a single 12-team NL, but the NL dropped four teams after the 1899 season. This led to the formation of the
American League The American League of Professional Baseball Clubs, known simply as the American League (AL), is one of two leagues that make up Major League Baseball (MLB) in the United States and Canada. It developed from the Western League, a minor league ...
in 1901 under AL president
Ban Johnson Byron Bancroft Johnson (January 5, 1864 – March 28, 1931) was an American executive in professional baseball who served as the founder and first president of the American League (AL). Johnson developed the AL—a descendant of the mino ...
, and the resulting bidding war for players led to widespread contract-breaking and legal disputes. The war between the AL and NL caused shock waves throughout the baseball world. At a meeting at the Leland Hotel in Chicago in 1901, the other baseball leagues negotiated a plan to maintain their independence. A new National Association was formed to oversee these minor leagues. After 1902, the NL, AL, and NA signed a new National Agreement which tied independent contracts to the reserve-clause contracts. The agreement also set up a formal classification system for minor leagues, the forerunner of today's system that was refined by
Branch Rickey Wesley Branch Rickey (December 20, 1881 – December 9, 1965) was an American baseball player and sports executive. Rickey was instrumental in breaking Major League Baseball's color barrier by signing black player Jackie Robinson. He also creat ...
.


Other recognized leagues

Several other early defunct baseball leagues are officially considered major leagues, and their statistics and records are included with those of the two current major leagues. In 1969, the Special Baseball Records Committee of Major League Baseball officially recognized six major leagues: the National League, American League, American Association,
Union Association The Union Association was a league in Major League Baseball which lasted for just the 1884 season. St. Louis won the pennant and joined the National League the following season. Seven of the twelve teams who were in the Association at some poi ...
(1884),
Players' League The Players' National League of Professional Base Ball Clubs, popularly known as the Players' League (PL), was a short-lived but star-studded professional American baseball league of the 19th century. The PL was formed by the Brotherhood of Prof ...
(1890), and
Federal League The Federal League of Base Ball Clubs, known simply as the Federal League, was an American professional baseball league that played its first season as a minor league in 1913 and operated as a "third major league", in competition with the e ...
(1914–1915). The status of the National Association as a major league has been a point of dispute among baseball researchers; while its statistics are not recognized by Major League Baseball, its statistics ''are'' included with those of other major leagues by some baseball reference websites, such as
Retrosheet Retrosheet is a nonprofit organization whose website features box scores of Major League Baseball (MLB) games from 1906 to the present, and play-by-play narratives for almost every contest since the 1930s. It also includes scores from every major ...
. Some researchers, including
Nate Silver Nathaniel Read Silver (born January 13, 1978) is an American statistician, writer, and poker player who analyzes baseball (see sabermetrics), basketball, and elections (see psephology). He is the founder and editor-in-chief of ''FiveThirtyEight' ...
, dispute the major-league status of the Union Association by pointing out that franchises came and went and that the St. Louis club was deliberately "stacked"; the St. Louis club was owned by the league's president and it was the only club that was close to major-league caliber. In December 2020, Major League Baseball announced its recognition of seven leagues within
Negro league baseball The Negro leagues were United States professional baseball leagues comprising teams of African Americans and, to a lesser extent, Latin Americans. The term may be used broadly to include professional black teams outside the leagues and it may be ...
as major leagues, and in 2021, baseball reference website
Baseball-Reference.com Baseball-Reference is a website providing baseball statistics for every player in Major League Baseball history. The site is often used by major media organizations and baseball broadcasters as a source for statistics. It offers a variety of advan ...
began to include statistics from those seven leagues into their major-league statistics.


Dead-ball era

The period between 1900 and 1919 is commonly referred to as the "dead-ball era". Games of this era tended to be low-scoring and were often dominated by pitchers, such as
Walter Johnson Walter Perry Johnson (November 6, 1887 – December 10, 1946), nicknamed "Barney" and "The Big Train", was an American professional baseball player and manager. He played his entire 21-year baseball career in Major League Baseball as a right-ha ...
,
Cy Young Denton True "Cy" Young (March 29, 1867 – November 4, 1955) was an American Major League Baseball (MLB) pitcher. Born in Gilmore, Ohio, he worked on his family's farm as a youth before starting his professional baseball career. Young entered th ...
,
Christy Mathewson Christopher Mathewson (August 12, 1880 – October 7, 1925), nicknamed "Big Six", "the Christian Gentleman", "Matty", and "the Gentleman's Hurler", was a Major League Baseball right-handed pitcher, who played 17 seasons with the New York Giant ...
,
Mordecai Brown Mordecai Peter Centennial Brown (October 19, 1876 – February 14, 1948), nicknamed Three Finger Brown or Miner, was an American Major League Baseball pitcher and manager during the first two decades of the 20th century (known as the " dead-ball e ...
, and
Grover Cleveland Alexander Grover Cleveland Alexander (February 26, 1887 – November 4, 1950), nicknamed "Old Pete", was an American Major League Baseball pitcher. He played from 1911 through 1930 for the Philadelphia Phillies, Chicago Cubs, and St. Louis Cardinals. He ...
. The term also accurately describes the condition of the baseball itself. The baseball used American rather than the modern Australian wool yarn and was not wound as tightly, affecting the distance that it would travel. More significantly, balls were kept in play until they were mangled, soft and sometimes lopsided. During this era, a baseball cost three dollars, equal to $ today (in inflation-adjusted
USD The United States dollar (symbol: $; code: USD; also abbreviated US$ or U.S. Dollar, to distinguish it from other dollar-denominated currencies; referred to as the dollar, U.S. dollar, American dollar, or colloquially buck) is the official ...
), and owners were reluctant to purchase new balls. Fans were expected to throw back fouls and (rare) home runs. Baseballs also became stained with tobacco juice, grass, and mud, and sometimes the juice of licorice, which some players would chew for the purpose of discoloring the ball. Also, pitchers could manipulate the ball through the use of the
spitball A spitball is an illegal baseball pitch in which the ball has been altered by the application of a foreign substance such as saliva or petroleum jelly. This technique alters the wind resistance and weight on one side of the ball, causing it to m ...
. (In 1921 use of this pitch was restricted to a few pitchers with a
grandfather clause A grandfather clause, also known as grandfather policy, grandfathering, or grandfathered in, is a provision in which an old rule continues to apply to some existing situations while a new rule will apply to all future cases. Those exempt from t ...
.) Additionally, many ballparks had large dimensions, such as the
West Side Grounds West Side Park was the name used for two different ballparks that formerly stood in Chicago, Illinois. They were both home fields of the team now known as the Chicago Cubs of the National League. Both ballparks hosted baseball championships. The ...
of the Chicago Cubs, which was to the center field fence, and the Huntington Avenue Grounds of the
Boston Red Sox The Boston Red Sox are an American professional baseball team based in Boston. The Red Sox compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. Founded in as one of the American League's eight ...
, which was to the center field fence, thus home runs were rare, and "small ball" tactics such as
singles Singles are people not in a committed relationship. Singles may also refer to: Film and television * ''Singles'' (miniseries), a 1984 Australian television series * ''Singles'' (1992 film), written and directed by Cameron Crowe * ''Singles'' ...
, bunts,
stolen base In baseball, a stolen base occurs when a runner advances to a base to which they are not entitled and the official scorer rules that the advance should be credited to the action of the runner. The umpires determine whether the runner is safe or ...
s, and the
hit-and-run In traffic laws, a hit and run or a hit-and-run is the act of causing a traffic collision and not stopping afterwards. It is considered a supplemental crime in most jurisdictions. Additional obligation In many jurisdictions, there may be an ...
play dominated the strategies of the time. Hitting methods like the
Baltimore Chop B backdoor breaking ball :A breaking pitch, usually a Slider (baseball), slider, curveball, or cut fastball that, due to its lateral motion, passes through a small part of the Glossary of baseball (S)#strike zone, strike zone on the outside edg ...
were used to increase the number of infield singles. On a successful Baltimore chop, the batter hits the ball forcefully into the ground, causing it to bounce so high that the batter reaches first base before the ball can be fielded and thrown to the first baseman. The adoption of the foul strike rule in the early twentieth century quickly sent baseball from a high-scoring game to one where scoring runs became a struggle. Prior to the institution of this rule, foul balls were not counted as strikes: a batter could foul off any number of pitches with no strikes counted against him; this gave an enormous advantage to the batter. In 1901, the NL adopted the foul strike rule, and the AL followed suit in 1903. After the
1919 World Series The 1919 World Series was the championship series in Major League Baseball for the 1919 season. The 16th edition of the World Series, it matched the American League champion Chicago White Sox against the National League champion Cincinnati Reds. ...
between the
Chicago White Sox The Chicago White Sox are an American professional baseball team based in Chicago. The White Sox compete in Major League Baseball (MLB) as a member club of the American League (AL) Central division. The team is owned by Jerry Reinsdorf, and p ...
and Cincinnati Reds, baseball was rocked by allegations of a
game fixing In organized sports, match fixing is the act of playing or officiating a match with the intention of achieving a pre-determined result, violating the rules of the game and often the law. There are many reasons why match fixing might take place, ...
scheme known as the
Black Sox Scandal The Black Sox Scandal was a Major League Baseball game-fixing scandal in which eight members of the Chicago White Sox were accused of throwing the 1919 World Series against the Cincinnati Reds in exchange for money from a gambling syndicate l ...
. Eight players— "Shoeless" Joe Jackson,
Eddie Cicotte Edward Victor Cicotte (; June 19, 1884 – May 5, 1969), nicknamed "Knuckles", was an American right-handed pitcher in Major League Baseball best known for his time with the Chicago White Sox. He was one of eight players permanently ineligible f ...
, Claude "Lefty" Williams, George "Buck" Weaver, Arnold "Chick" Gandil,
Fred McMullin Fred Drury McMullin (October 13, 1891 – November 20, 1952) was an American Major League Baseball third baseman. He is best known for his involvement in the 1919 Black Sox scandal. Early life Fred McMullin was born to Robert and Minnie McM ...
, Charles "Swede" Risberg, and Oscar "Happy" Felsch—intentionally lost the World Series in exchange for a ring worth $100,000 ($1,712,780.35 in 2022 dollars). Despite being acquitted, all were permanently banned from Major League Baseball.


Rise in popularity

Baseball's popularity increased in the 1920s and 1930s. The 1920 season was notable for the death of
Ray Chapman Raymond Johnson Chapman (January 15, 1891 – August 17, 1920) was an American baseball player. He spent his entire career as a shortstop for the Cleveland Indians. Chapman was hit in the head by a pitch thrown by pitcher Carl Mays and died ...
of the
Cleveland Indians The Cleveland Guardians are an American professional baseball team based in Cleveland. The Guardians compete in Major League Baseball (MLB) as a member club of the American League (AL) Central division. Since , they have played at Progressive F ...
. Chapman, who was struck in the head by a pitch and died a few hours later, became the only MLB player to die of an on-field injury, a tragedy which led directly to both leagues requiring the placing into play new, white baseballs whenever a ball became scuffed or dirty, helping bring the "dead-ball" era to an end. The following year, the
New York Yankees The New York Yankees are an American professional baseball team based in the Boroughs of New York City, New York City borough of the Bronx. The Yankees compete in Major League Baseball (MLB) as a member club of the American League (AL) Amer ...
made their first World Series appearance. By the end of the 1930s, the team had appeared in 11 World Series, winning eight of them. Yankees slugger
Babe Ruth George Herman "Babe" Ruth Jr. (February 6, 1895 – August 16, 1948) was an American professional baseball player whose career in Major League Baseball (MLB) spanned 22 seasons, from 1914 through 1935. Nicknamed "the Bambino" and "the Su ...
had set the single-season home run record in 1927, hitting 60 home runs; a few years earlier, Ruth had set the same record with 29 home runs. Affected by the difficulties of the
Great Depression The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
, baseball's popularity had begun a downward turn in the early 1930s. By 1932, only two MLB teams turned a profit. Attendance had fallen, due at least in part to a 10% federal amusement tax added to baseball ticket prices. Baseball owners cut their rosters from 25 men to 23 men, and even the best players took pay cuts. Team executives were innovative in their attempts to survive, creating night games, broadcasting games live by radio, and rolling out promotions such as free admission for women. Throughout the period of the Great Depression, no MLB teams moved or folded.


World War II era

The onset of World War II created a significant shortage of professional baseball players, as more than 500 men left MLB teams to serve in the military. Many of them played on service baseball teams that entertained military personnel in the US or in the Pacific. MLB teams of this time largely consisted of young men, older players, and those with a military classification of 4F, indicating mental, physical, or moral unsuitability for service. Men like
Pete Gray Pete or Petes or ''variation'', may refer to: People * Pete (given name) * Pete (nickname) * Pete (surname) Fictional characters * Pete (Disney), a cartoon character in the ''Mickey Mouse'' universe * Pete the Pup (a.k.a. 'Petey'), a character ...
, a one-armed outfielder, got the chance to advance to the major leagues. However, MLB rosters did not include any black players through the end of the war. Black players, many of whom served in the war, were still restricted to playing
Negro league baseball The Negro leagues were United States professional baseball leagues comprising teams of African Americans and, to a lesser extent, Latin Americans. The term may be used broadly to include professional black teams outside the leagues and it may be ...
. Wartime blackout restrictions, designed to keep outdoor lighting at low levels, caused another problem for baseball. These rules limited traveling and night games to the point that the 1942 season nearly had to be canceled. On January 14, 1942, MLB Commissioner
Kenesaw Mountain Landis Kenesaw Mountain Landis (; November 20, 1866 – November 25, 1944) was an American jurist who served as a United States federal judge from 1905 to 1922 and the first Commissioner of Baseball from 1920 until his death. He is remembered for his ...
wrote a letter to U.S. President
Franklin D. Roosevelt Franklin Delano Roosevelt (; ; January 30, 1882April 12, 1945), often referred to by his initials FDR, was an American politician and attorney who served as the 32nd president of the United States from 1933 until his death in 1945. As the ...
and pleaded for the continuation of baseball during the war in hopes for a start of a new major league season. President Roosevelt responded, "I honestly feel that it would be best for the country to keep baseball going. There will be fewer people unemployed and everybody will work longer hours and harder than ever before. And that means that they ought to have a chance for recreation and for taking their minds off their work even more than before." With the approval of President Roosevelt, spring training began in 1942 with few repercussions. The war interrupted the careers of stars including Stan Musial, Bob Feller,
Ted Williams Theodore Samuel Williams (August 30, 1918 – July 5, 2002) was an American professional baseball player and manager. He played his entire 19-year Major League Baseball (MLB) career, primarily as a left fielder, for the Boston Red Sox from 1939 ...
, and
Joe DiMaggio Joseph Paul DiMaggio (November 25, 1914 – March 8, 1999), nicknamed "Joltin' Joe", "The Yankee Clipper" and "Joe D.", was an American baseball center fielder who played his entire 13-year career in Major League Baseball for the New York Yank ...
, but baseball clubs continued to field their teams.


Breaking the color barrier

Branch Rickey, president and general manager of the Brooklyn Dodgers, began making efforts to introduce a black baseball player to the previously all-white professional baseball leagues in the mid-1940s. He selected
Jackie Robinson Jack Roosevelt Robinson (January 31, 1919 – October 24, 1972) was an American professional baseball player who became the first African American to play in Major League Baseball (MLB) in the modern era. Robinson broke the baseball color line ...
from a list of promising Negro league players. After obtaining a commitment from Robinson to "turn the other cheek" to any racial antagonism directed at him, Rickey agreed to sign him to a contract for $600 a month. In what was later referred to as "The Noble Experiment", Robinson was the first black baseball player in the International League since the 1880s, joining the Dodgers' farm club, the
Montreal Royals The Montreal Royals were a minor league professional baseball team in Montreal, Quebec, during 1897–1917 and 1928–1960. A member of the International League, the Royals were the top farm club (Class AAA) of the Brooklyn Dodgers from 1939; pi ...
, for the 1946 season. The following year, the Dodgers called up Robinson to the major leagues. On April 15, 1947, Robinson made his major league debut at Ebbets Field before a crowd of 26,623 spectators, including more than 14,000 black patrons. Black baseball fans began flocking to see the Dodgers when they came to town, abandoning the Negro league teams that they had followed exclusively. Robinson's promotion met a generally positive, although mixed, reception among newspaper writers and white major league players. Manager
Leo Durocher Leo Ernest Durocher (French spelling Léo Ernest Durocher) (; July 27, 1905 – October 7, 1991), nicknamed "Leo the Lip" and "Lippy", was an American professional baseball player, manager (baseball), manager and coach (baseball), coach. He playe ...
informed his team, "I don't care if he is yellow or black or has stripes like a fucking zebra. I'm his manager and I say he plays." After a strike threat by some players, NL President
Ford Frick Ford Christopher Frick (December 19, 1894 – April 8, 1978) was an American sportswriter and baseball executive. After working as a teacher and as a sportswriter for the ''New York American'', he served as public relations director of the Natio ...
and Baseball Commissioner Happy Chandler let it be known that any striking players would be suspended. Robinson received significant encouragement from several major-league players, including Dodgers teammate
Pee Wee Reese Harold Peter Henry "Pee Wee" Reese (July 23, 1918 – August 14, 1999) was an Americans, American professional baseball player. He played in Major League Baseball as a shortstop for the Los Angeles Dodgers, Brooklyn / Los Angeles Dodgers from 194 ...
who said, "You can hate a man for many reasons. Color is not one of them." That year, Robinson won the inaugural
Major League Baseball Rookie of the Year Award In Major League Baseball, the Rookie of the Year Award is given annually to two outstanding rookie players, one each for the American League (AL) and National League (NL), as voted on by the Baseball Writers' Association of America (BBWAA). The a ...
(separate NL and AL Rookie of the Year honors were not awarded until 1949).''Rookie of the Year Awards & Rolaids Relief Award Winners''.
Baseball-Reference.com Baseball-Reference is a website providing baseball statistics for every player in Major League Baseball history. The site is often used by major media organizations and baseball broadcasters as a source for statistics. It offers a variety of advan ...
. Retrieved November 24, 2013.
Less than three months later,
Larry Doby Lawrence Eugene Doby (December 13, 1923 – June 18, 2003) was an American professional baseball player in the Negro leagues and Major League Baseball (MLB) who was the second black player to break baseball's color barrier and the first black pl ...
became the first African-American to break the color barrier in the American League with the Cleveland Indians.''Doby was AL's first African-American player''.
ESPN Classic ESPN Classic was an American multinational pay television network owned by ESPN Inc., a joint venture between The Walt Disney Company (which owns a controlling 80% stake) and Hearst Communications (which owns 20%). The channel was originally l ...
. June 26, 2003. Retrieved November 24, 2013.
The next year, a number of other black players entered the major leagues.
Satchel Paige Leroy Robert "Satchel" Paige (July 7, 1906 – June 8, 1982) was an American professional baseball pitcher who played in Negro league baseball and Major League Baseball (MLB). His career spanned five decades and culminated with his induction in ...
was signed by the Indians and the Dodgers added star catcher
Roy Campanella Roy Campanella (November 19, 1921 – June 26, 1993), nicknamed "Campy", was an American baseball player, primarily as a catcher. The Philadelphia native played in the Negro leagues and Mexican League for nine years before entering the minor lea ...
and
Don Newcombe Donald Newcombe (June 14, 1926 – February 19, 2019), nicknamed "Newk", was an American professional baseball pitcher in Negro league and Major League Baseball who played for the Newark Eagles (1944–45), Brooklyn/Los Angeles Dodgers (1949–1 ...
, who was later the first winner of the
Cy Young Award The Cy Young Award is given annually to the best pitchers in Major League Baseball (MLB), one each for the American League (AL) and National League (NL). The award was first introduced in 1956 by Baseball Commissioner Ford Frick in honor of Hall ...
for his outstanding pitching.


Women in baseball

MLB banned the signing of women to contracts in 1952, but that ban was lifted in 1992. There have been no female MLB players.


Relocation and expansion

From 1903 to 1953, the major leagues consisted of two eight-team leagues whose 16 teams were located in ten cities, all in the northeastern and midwestern United States: New York City had three teams and
Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...
, Chicago,
Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...
, and
St. Louis St. Louis () is the second-largest city in Missouri, United States. It sits near the confluence of the Mississippi and the Missouri Rivers. In 2020, the city proper had a population of 301,578, while the bi-state metropolitan area, which e ...
each had two teams. St. Louis was the southernmost and westernmost city with a major league team. The longest possible road trip, from Boston to St. Louis, took about 24 hours by railroad. After a half-century of stability, starting in the 1950s, teams began to move out of cities with multiple teams into cities that hadn't had them before. In three consecutive years from 1953 to 1955, three teams moved to new cities: the Boston Braves became the
Milwaukee Braves The Atlanta Braves are an American professional baseball team based in the Atlanta metropolitan area. The Braves compete in Major League Baseball (MLB) as a member club of the National League (NL) East division. The Braves were founded in Bost ...
, the
St. Louis Browns The St. Louis Browns were a Major League Baseball team that originated in Milwaukee, Wisconsin, as the Milwaukee Brewers. A charter member of the American League (AL), the Brewers moved to St. Louis, Missouri, after the 1901 season, where they p ...
became the
Baltimore Orioles The Baltimore Orioles are an American professional baseball team based in Baltimore. The Orioles compete in Major League Baseball (MLB) as a member club of the American League (AL) American League East, East division. As one of the American L ...
, and the
Philadelphia Athletics The Philadelphia Athletics were a Major League Baseball team that played in Philadelphia from 1901 to 1954, when they moved to Kansas City, Missouri, and became the Kansas City Athletics. Following another move in 1967, the team became the Oaklan ...
became the
Kansas City Athletics The history of the Athletics Major League Baseball franchise spans the period from 1901 to the present day, having begun as a charter member franchise in the new American League in Philadelphia before moving to Kansas City in 1955 for 13 seas ...
. The 1958 Major League Baseball season was perhaps the pivotal season in making Major League Baseball a nationwide league.
Walter O'Malley Walter Francis O'Malley (October 9, 1903 – August 9, 1979) was an American sports executive who owned the Brooklyn/Los Angeles Dodgers team in Major League Baseball from 1950 to 1979. In 1958, as owner of the Dodgers, he brought major league b ...
, owner of the
Brooklyn Dodgers The Brooklyn Dodgers were a Major League Baseball team founded in 1884 as a member of the American Association (19th century), American Association before joining the National League in 1890. They remained in Brooklyn until 1957, after which the ...
, moved his team to Los Angeles, marking the first major league franchise on the West Coast. Called "perhaps the most influential owner of baseball's early expansion era," O'Malley appeared on the cover of ''
Time Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, to ...
'' as a result of his efforts to move baseball to a more nationwide sport O'Malley was also influential in persuading the rival
New York Giants The New York Giants are a professional American football team based in the New York metropolitan area. The Giants compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) East division. ...
to move west to become the San Francisco Giants. The Giants were already suffering from slumping attendance records at their aging ballpark, the
Polo Grounds The Polo Grounds was the name of three stadiums in Upper Manhattan, New York City, used mainly for professional baseball and American football from 1880 through 1963. The original Polo Grounds, opened in 1876 and demolished in 1889, was built fo ...
. Had the Dodgers moved out west alone, the
St. Louis Cardinals The St. Louis Cardinals are an American professional baseball team based in St. Louis. The Cardinals compete in Major League Baseball (MLB) as a member club of the National League (NL) Central division. Since the 2006 season, the Cardinals ha ...
— away—would have been the closest NL team. The joint move made West Coast road trips economical for visiting teams. O'Malley invited
San Francisco Mayor The mayor of the City and County of San Francisco is the head of the executive branch of the San Francisco city and county government. The officeholder has the duty to enforce city laws, and the power to either approve or veto bills passed by ...
George Christopher George Christopher (born George Christopheles; December 8, 1907 – September 14, 2000) was a Greek-American politician who served as the 34th mayor of San Francisco from 1956 to 1964. He is the most recent Republican to be elected mayor of San ...
to New York to meet with Giants owner
Horace Stoneham Horace Charles Stoneham ( ; April 27, 1903 – January 7, 1990) was an American Major League Baseball executive and the owner of the New York / San Francisco Giants from 1936 to 1976. Inheriting the Giants, then one of the most prominent franch ...
. Stoneham was considering moving the Giants to
Minnesota Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the 22nd most populous, with over 5.75 million residents. Minnesota is home to western prairies, now given over to ...
, but he was convinced to join O'Malley on the West Coast at the end of 1957. The meetings between Stoneham, Christopher and O'Malley occurred against the wishes of Ford Frick, the Commissioner of Baseball. The dual moves were successful for both franchises—and for MLB. The Dodgers set a single-game MLB attendance record in their first home appearance with 78,672 fans. In 1961, the first Washington Senators franchise moved to Minneapolis–St. Paul to become the
Minnesota Twins The Minnesota Twins are an American professional baseball team based in Minneapolis. The Twins compete in Major League Baseball (MLB) as a member club of the American League (AL) Central Division. The team is named after the Twin Cities area w ...
. Two new teams were added to the American League at the same time: the
Los Angeles Angels The Los Angeles Angels are an American professional baseball team based in the Los Angeles metropolitan area. The Angels compete in Major League Baseball (MLB) as a member club of the American League (AL) West division. Since 1966, the team ha ...
(who soon moved from downtown L.A. to nearby
Anaheim Anaheim ( ) is a city in northern Orange County, California, part of the Los Angeles metropolitan area. As of the 2020 United States Census, the city had a population of 346,824, making it the most populous city in Orange County, the 10th-most p ...
) and a new Washington Senators franchise. The NL added the
Houston Astros The Houston Astros are an American professional baseball team based in Houston, Texas. The Astros compete in Major League Baseball (MLB) as a member club of the American League (AL) West division, having moved to the division in 2013 after ...
and the
New York Mets The New York Mets are an American professional baseball team based in the New York City borough of Queens. The Mets compete in Major League Baseball (MLB) as a member of the National League (NL) East division. They are one of two major league ...
in 1962. The Astros (known as the "Colt .45s" during their first three seasons) became the first southern major league franchise since the
Louisville Colonels The Louisville Colonels were a Major League Baseball team that also played in the American Association (AA) throughout that league's ten-year existence from 1882 until 1891. They were known as the Louisville Eclipse from 1882 to 1884, and as ...
folded in 1899 and the first franchise to be located along the
Gulf Coast The Gulf Coast of the United States, also known as the Gulf South, is the coastline along the Southern United States where they meet the Gulf of Mexico. The coastal states that have a shoreline on the Gulf of Mexico are Texas, Louisiana, Mississ ...
. The Mets established a reputation for futility by going 40–120 during their first season of play in the nation's media capital—and by playing only a little better in subsequent campaigns—but in their eighth season (1969) the Mets became the first of the 1960s expansion teams to play in the postseason, culminating in a World Series title over the heavily favored Baltimore Orioles. In 1966, the major leagues moved to the "Deep South" when the Braves moved to Atlanta. In 1968, the Kansas City Athletics moved west to become the
Oakland Athletics The Oakland Athletics (often referred to as the A's) are an American professional baseball team based in Oakland, California. The Athletics compete in Major League Baseball (MLB) as a member club of the American League (AL) West division. The te ...
. In 1969, the American and National Leagues both added two expansion franchises. The American League added the
Seattle Pilots The Seattle Pilots were an American professional baseball, professional baseball team based in Seattle, Washington (state), Washington during the 1969 Major League Baseball season. During their single-season existence, the Pilots played their ho ...
(who became the
Milwaukee Brewers The Milwaukee Brewers are an American professional baseball team based in Milwaukee. They compete in Major League Baseball (MLB) as a member club of the National League (NL) National League Central, Central division. The Brewers are named for t ...
after one disastrous season in Seattle) and the
Kansas City Royals The Kansas City Royals are an American professional baseball team based in Kansas City, Missouri. The Royals compete in Major League Baseball (MLB) as a member club of the American League (AL) Central division. The team was founded as an expans ...
. The NL added the first Canadian franchise, the
Montreal Expos The Montreal Expos (french: link=no, Les Expos de Montréal) were a Canadian professional baseball team based in Montreal, Quebec. The Expos were the first Major League Baseball (MLB) franchise located outside the United States. They played in t ...
, as well as the
San Diego Padres The San Diego Padres are an American professional baseball team based in San Diego. The Padres compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. Founded in 1969, the club has won two NL penna ...
. In 1972, the second Washington Senators moved to the
Dallas–Fort Worth metroplex The Dallas–Fort Worth metroplex, officially designated Dallas–Fort Worth–Arlington by the U.S. Office of Management and Budget, is a conurbated metropolitan statistical area in the U.S. state of Texas encompassing 11 counties and anchore ...
to become the Texas Rangers. In 1977, baseball expanded again, adding a second Canadian team, the
Toronto Blue Jays The Toronto Blue Jays are a Canadian professional baseball team based in Toronto. The Blue Jays compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. Since 1989, the team has played its home games ...
, as well as the
Seattle Mariners The Seattle Mariners are an American professional baseball team based in Seattle. They compete in Major League Baseball (MLB) as a member club of the American League (AL) American League West, West division. The team joined the American League ...
. Subsequently, no new teams were added until the 1990s and no teams moved until 2005.


Pitching dominance and rule changes

By the late 1960s, the balance between pitching and hitting had swung in favor of the pitchers. In 1968—later nicknamed "the year of the pitcher"1968 – The Year of the Pitcher
''Sports Illustrated'', August 4, 1998.
—Boston Red Sox player
Carl Yastrzemski Carl Michael Yastrzemski ( ; nicknamed "Yaz"; born August 22, 1939) is an American former Major League Baseball player. He was elected to the Baseball Hall of Fame in 1989. Yastrzemski played his entire 23-year Major League career with the Bost ...
won the American League batting title with an average of just .301, the lowest in the history of Major League Baseball.
Detroit Tigers The Detroit Tigers are an American professional baseball team based in Detroit. The Tigers compete in Major League Baseball (MLB) as a member of the American League (AL) Central division. One of the AL's eight charter franchises, the club was f ...
pitcher
Denny McLain Dennis Dale McLain (born March 29, 1944) is an American former professional baseball player. He played for ten seasons in Major League Baseball as a right-handed pitcher, most prominently as a member of the Detroit Tigers. In 1968, McLain beca ...
won 31 games, making him the only pitcher to win 30 games in a season since
Dizzy Dean Jay Hanna "Dizzy" Dean (January 16, 1910 – July 17, 1974), also known as Jerome Herman Dean (both the 1910 and 1920 Censuses show his name as "Jay"), was an American professional baseball pitcher. During his Major League Baseball (MLB) career ...
in 1934. St. Louis Cardinals starting pitcher
Bob Gibson Robert Gibson (born Pack Robert Gibson; November 9, 1935October 2, 2020) was an American professional baseball pitcher who played 17 seasons in Major League Baseball (MLB) for the St. Louis Cardinals (1959–1975). Nicknamed "Gibby" and "Hoot" ( ...
achieved an equally remarkable feat by allowing an
ERA An era is a span of time defined for the purposes of chronology or historiography, as in the regnal eras in the history of a given monarchy, a calendar era used for a given calendar, or the geological eras defined for the history of Earth. Comp ...
of just 1.12. Following these pitching performances, in December 1968 the MLB Playing Rules Committee voted to reduce the strike zone from knees to shoulders to top of knees to armpits and lower the pitcher's mound from 15 to 10 inches, beginning in the 1969 season. In 1973, the American League, which had been suffering from much lower attendance than the National League, sought to increase scoring even further by initiating the
designated hitter The designated hitter (DH) is a baseball player who bats in place of another position player, most commonly the pitcher. The position is authorized by Major League Baseball Rule 5.11. It was adopted by the American League in 1973 and later by th ...
(DH) rule.


New stadiums and artificial surfaces

Throughout the 1960s and 1970s, as baseball expanded, NFL football had been surging in popularity, making it economical for many of these cities to build
multi-purpose stadium A multi-purpose stadium is a type of stadium designed to be easily used by multiple types of events. While any stadium could potentially host more than one type of sport or event, this concept usually refers to a specific design philosophy tha ...
s instead of single-purpose baseball fields. Because of climate and economic issues, many of these facilities had playing surfaces made from
artificial turf Artificial turf is a surface of synthetic fibers made to look like natural grass. It is most often used in arenas for sports that were originally or are normally played on grass. However, it is now being used on residential lawns and commer ...
, as well as the oval designs characteristic of stadiums designed to house both baseball and football. This often resulted in baseball fields with relatively more
foul territory In baseball, a foul ball is a batted ball that: * Settles on foul territory between home and first base or between home and third base, or * Bounces and then goes past first or third base on or over foul territory, or * Has its first bounce occu ...
than older stadiums. These characteristics changed the nature of professional baseball, putting a higher premium on speed and defense over home-run hitting power since the fields were often too big for teams to expect to hit many home runs and foul balls hit in the air could more easily be caught for outs. Teams began to be built around pitching—particularly their bullpens—and speed on the basepaths. Artificial surfaces meant balls traveled quicker and bounced higher, so it became easier to hit
ground ball In the sports of baseball and softball, a batted ball is a pitch that has been contacted by the batter's bat. Batted balls are either fair or foul, and can be characterized as a fly ball, pop-up, line drive, or ground ball. In baseball, a fou ...
s " in the hole" between the corner and middle infielders. Starting pitchers were no longer expected to throw
complete game In baseball, a complete game (CG) is the act of a pitcher pitching an entire game without the benefit of a relief pitcher. A pitcher who meets this criterion will be credited with a complete game regardless of the number of innings played—pitche ...
s; it was enough for a starter to pitch 6–7 innings and turn the game over to the team's closer, a position which grew in importance over these decades. As stolen bases increased, home run totals dropped. After
Willie Mays Willie Howard Mays Jr. (born May 6, 1931), nicknamed "the Say Hey Kid" and "Buck", is a former center fielder in Major League Baseball (MLB). Regarded as one of the greatest players ever, Mays ranks second behind only Babe Ruth on most all-tim ...
hit 52 home runs in 1965, only one player ( George Foster) reached that mark until the 1990s.


Scandals and a changing game

During the 1980s, baseball experienced a number of significant changes the game had not seen in years. Home runs were on the decline throughout the decade, with players hitting only 40 home runs just 13 times and no one hitting more than 50 home runs in a season for the first time since the Dead-ball era (1900–1919). The
1981 Major League Baseball strike The 1981 Major League Baseball strike was the first work stoppage in Major League Baseball since the 1972 Major League Baseball strike that resulted in regular season games being cancelled. Overall, it was the fourth work stoppage since 1972, bu ...
from June 12 until July 31 forced the cancellation of 713 total games and resulted in a split-season format. In 1985,
Pete Rose Peter Edward Rose Sr. (born April 14, 1941), also known by his nickname "Charlie Hustle", is an American former professional baseball player and manager. Rose played in Major League Baseball (MLB) from 1963 to 1986, most prominently as a membe ...
broke
Ty Cobb Tyrus Raymond Cobb (December 18, 1886 – July 17, 1961), nicknamed "the Georgia Peach", was an American Major League Baseball (MLB) center fielder. He was born in rural Narrows, Georgia. Cobb spent 22 seasons with the Detroit Tigers, the las ...
's all-time hits record with his 4,192nd hit, and in 1989 Rose received a lifetime ban from baseball as a result of betting on baseball games while manager of the
Cincinnati Reds The Cincinnati Reds are an American professional baseball team based in Cincinnati. They compete in Major League Baseball (MLB) as a member club of the National League (NL) National League Central, Central division and were a charter member of ...
. Rose was the first person to receive a lifetime ban from baseball since 1943. 1985 also saw the
Pittsburgh drug trials The Pittsburgh drug trials of 1985 were the catalyst for a Major League Baseball-related cocaine scandal. Several current and former members of the Pittsburgh Pirates – Dale Berra, Lee Lacy, Lee Mazzilli, John Milner, Dave Parker, Rod Scur ...
which involved players who were called to testify before a grand jury in Pittsburgh related to cocaine trafficking. The 1994–95 Major League Baseball strike from August 12, 1994, to April 25, 1995, caused the cancellation of over 900 games and the forfeit of the entire 1994 postseason. In 2019, Major League Baseball opened an investigation into allegations that members of the
2017 World Series The 2017 World Series was the championship series of Major League Baseball's (MLB) 2017 season. The 113th edition of the World Series, it was a best-of-seven playoff played between the National League (NL) champion Los Angeles Dodgers and the ...
champion
Houston Astros The Houston Astros are an American professional baseball team based in Houston, Texas. The Astros compete in Major League Baseball (MLB) as a member club of the American League (AL) West division, having moved to the division in 2013 after ...
stole signs from opposing teams using technology during the 2017 and 2018 seasons. The Astros were found guilty in January 2020 and while no active players faced any repercussions, Astros
general manager A general manager (GM) is an executive who has overall responsibility for managing both the revenue and cost elements of a company's income statement, known as profit & loss (P&L) responsibility. A general manager usually oversees most or all of ...
Jeff Luhnow Jeff Luhnow (born June 8, 1966) is a Mexican-American former baseball executive and owner of Mexican club Cancún F.C. and CD Leganés of Spain. He worked for the St. Louis Cardinals in their scouting department from 2003 through 2011, before j ...
and field manager
A. J. Hinch Andrew Jay Hinch (born May 15, 1974) is an American professional baseball coach and former player who is the manager of the Detroit Tigers of Major League Baseball (MLB). Hinch played catcher for the Oakland Athletics (–), Kansas City Royals ...
were suspended for the entire 2020 season. The Astros were fined the maximum allowable $5 million and forfeited their first- and second-round picks in the 2020 and 2021 drafts.


Steroid era, further expansion and near contraction

Routinely in the late 1990s and early 2000s, baseball players hit 40 or 50 home runs in a season, a feat that was considered rare even in the 1980s. It has since become apparent that at least some of this power surge was a result of players using steroids and other performance-enhancing drugs. In 1993, the NL added the
Florida Marlins The Miami Marlins are an American professional baseball team based in Miami. The Marlins compete in Major League Baseball (MLB) as a member club of the National League (NL) East division. The club's home ballpark is LoanDepot Park. The franc ...
in
Miami Miami ( ), officially the City of Miami, known as "the 305", "The Magic City", and "Gateway to the Americas", is a East Coast of the United States, coastal metropolis and the County seat, county seat of Miami-Dade County, Florida, Miami-Dade C ...
and the
Colorado Rockies The Colorado Rockies are an American professional baseball team based in Denver. The Rockies compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. The team plays its home baseball games at Coors Fie ...
in
Denver Denver () is a consolidated city and county, the capital, and most populous city of the U.S. state of Colorado. Its population was 715,522 at the 2020 census, a 19.22% increase since 2010. It is the 19th-most populous city in the Unit ...
. In 1998, the Brewers switched leagues by joining the National League, and two new teams were added: the NL's
Arizona Diamondbacks The Arizona Diamondbacks (colloquially known as the D-backs) are an American professional baseball team based in Phoenix. The Diamondbacks compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. The f ...
in
Phoenix Phoenix most often refers to: * Phoenix (mythology), a legendary bird from ancient Greek folklore * Phoenix, Arizona, a city in the United States Phoenix may also refer to: Mythology Greek mythological figures * Phoenix (son of Amyntor), a ...
and the AL's
Tampa Bay Devil Rays The Tampa Bay Rays are an American professional baseball team based in St. Petersburg, Florida. The Rays compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. Since its inception, the team's home ve ...
in
Tampa Bay Tampa Bay is a large natural harbor and shallow estuary connected to the Gulf of Mexico on the west-central coast of Florida, comprising Hillsborough Bay, McKay Bay, Old Tampa Bay, Middle Tampa Bay, and Lower Tampa Bay. The largest freshwater in ...
. After the 2001 season, the team owners voted in favor of contraction. Several MLB teams had been considered for elimination in early talks about contraction, but the Montreal Expos and the Minnesota Twins were the two teams that came closest to folding under the plan. Plans for MLB contraction were halted when the Twins landlord was awarded a court injunction that required the team to play its 2002 home games at their stadium. MLB owners agreed to hold off on reducing the league's size until at least 2006. The Montreal Expos became the first franchise in over three decades to move when they became the
Washington Nationals The Washington Nationals are an American professional baseball team based in Washington, D.C.. They compete in Major League Baseball (MLB) as a member of the National League (NL) East division. From 2005 to 2007, the team played in RFK Stadiu ...
in 2005. This move left Canada with just one team, but it also returned baseball to Washington after a 33-year absence. This franchise shift, like many previous ones, involved baseball's return to a city that had been previously abandoned. Not counting the short-lived Federal League, Montreal is the only city to host an MLB franchise since 1901 that, , does not currently have a team.


The modern game

In recent years, with the advent of technologies such as
Statcast Statcast is a high-speed, high-accuracy, automated tool developed to analyze player movements and athletic abilities in Major League Baseball (MLB). Statcast was introduced to all thirty MLB stadiums in 2015, a year now considered the beginning ...
and its use of
Hawk-Eye Hawk-Eye is a computer vision system used in numerous sports such as cricket, tennis, Gaelic football, badminton, hurling, rugby union, association football and volleyball, to visually track the trajectory of the ball and display a profile o ...
starting in 2020 as well as with advanced statistics as provided by sites such as FanGraphs and Baseball Savant, MLB has evolved. With the ability to see precise movements of pitchers and batters, teams can assess the mechanics of a player and help them improve. Statcast also provides some features such as tracking the paths of most batted balls, tracking the speed of most batted balls, and tracking the exit velocity of most batted balls. Statcast has allowed for advanced defensive analytics that haven't been possible before tracking of players due to how subjective fielding can be. The rate of teams using a defensive shift has gone up from 13.7% in 2016 to 33.6% in 2022 because advanced statistics support this as an effective way to stop hitters from getting hits. Because the shift reduces the amount of balls in play that result in hits and MLB wishes to increase interest in baseball, MLB announced in September 2022 that extreme infield defensive shifts would be banned starting in 2023. In order to be compliant, there must be 2 fielders on each side of second base, and those fielders must have both of their feet on the infield dirt at the time the pitch is thrown. If this rule is not followed, the choice of an automatic ball or the outcome of the play is given to the batting team. The game of baseball has also slowed down significantly due to an increased number of strikeouts and walks — two outcomes that generally take many pitches to complete — and an increased amount of time taken for a pitcher to pitch. In 2020, it took an average of three hours and six minutes to complete a 9 inning game, a number which has steadily ticked up for years. Along with the restrictions on defensive shifts, the MLB announced the introduction of a pitch clock for the 2023 season and beyond, which is something that has been an experiment in MiLB for a few years. The pitch clock starts at 15 seconds. By the time the clock reaches 10 seconds, the catcher must be in their crouch behind home plate. When the clock reaches 8 seconds, the batter must be in the batter's box and be "alert". Before the 15 second timer reaches 0 seconds, the pitcher must have started their "motion to pitch". If any of these deadlines are violated, the count of the batter will be increased by one ball if the defending team violated the pitch clock or one strike if it is the offensive team who violated the pitch clock. Additionally, in order to prevent circumventing these rules pickoffs and step-offs which reset the pitch clock are only allowed two times total per plate appearance and, if a pitcher attempts a third pickoff and fails to get the runner out, a balk will be called. Similarly, a batter is restricted to calling a timeout (an action which resets the pitch clock) just once per plate appearance.


Uniforms

A
baseball uniform A baseball uniform is a type of uniform worn by baseball players, coaches and managers. Most baseball uniforms have the names and uniform numbers of players who wear them, usually on the backs of the uniforms to distinguish players from each ot ...
is a type of uniform worn by baseball players, and by some non-playing personnel, such as field managers and coaches. It is worn to indicate the person's role in the game and—through the use of logos, colors, and
numbers A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers can ...
—to identify the teams and their players, managers, and coaches. Traditionally, home uniforms display the team name on the front, while away uniforms display the team's home location. In modern times, however, exceptions to this pattern have become common, with teams using their team name on both uniforms. Most teams also have one or more alternate uniforms, usually consisting of the primary or secondary team color on the vest instead of the usual white or gray. In the past few decades
throwback uniform Throwback uniforms, throwback jerseys, retro kits or heritage guernseys are sports uniforms styled to resemble the uniforms that a team wore in the past. One-time or limited-time retro uniforms are sometimes produced to be worn by teams in games ...
s have become popular. The New York Knickerbockers were the first baseball team to use uniforms, taking the field on April 4, 1849, in pants made of blue wool, white
flannel Flannel is a soft woven fabric, of various fineness. Flannel was originally made from carded wool or worsted yarn, but is now often made from either wool, cotton, or synthetic fiber. Flannel is commonly used to make tartan clothing, blankets, ...
shirts ( jerseys) and
straw hat A straw hat is a wide-brimmed hat woven out of straw or straw-like synthetic materials. Straw hats are a type of sun hat designed to shade the head and face from direct sunlight, but are also used in fashion as a decorative element or a ...
s.
Caps Caps are flat headgear. Caps or CAPS may also refer to: Science and technology Computing * CESG Assisted Products Service, provided by the U.K. Government Communications Headquarters * Composite Application Platform Suite, by Java Caps, a Java ...
and other types of headgear have been a part of baseball uniforms from the beginning. Baseball teams often wore full-brimmed straw hats or no cap at all since there was no official rule regarding headgear. Under the 1882 uniform rules, players on the same team wore uniforms of different colors and patterns that indicated which position they played. This rule was soon abandoned as impractical. In the late 1880s,
Detroit Detroit ( , ; , ) is the largest city in the U.S. state of Michigan. It is also the largest U.S. city on the United States–Canada border, and the seat of government of Wayne County. The City of Detroit had a population of 639,111 at th ...
and
Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...
of the
National League The National League of Professional Baseball Clubs, known simply as the National League (NL), is the older of two leagues constituting Major League Baseball (MLB) in the United States and Canada, and the world's oldest extant professional team s ...
and
Brooklyn Brooklyn () is a borough of New York City, coextensive with Kings County, in the U.S. state of New York. Kings County is the most populous county in the State of New York, and the second-most densely populated county in the United States, be ...
of the American Association were the first to wear striped uniforms. By the end of the 19th century, teams began the practice of having two different uniforms, one for when they played at home in their own
baseball stadium A ballpark, or baseball park, is a type of sports venue where baseball is played. The playing field is divided into the infield, an area whose dimensions are rigidly defined, and the outfield, where dimensions can vary widely from place to pla ...
and a different one for when they played away (
on the road ''On the Road'' is a 1957 novel by American writer Jack Kerouac, based on the travels of Kerouac and his friends across the United States. It is considered a defining work of the postwar Beat and Counterculture generations, with its protagonis ...
) at the other team's ballpark. It became common to wear white pants with a white color vest at home and gray pants with a gray or solid (dark) colored vest when away. By 1900, both home and away uniforms were standard across the major leagues. In June 2021, MLB announced a long-term deal with cryptocurrency exchange FTX, which includes the FTX logo appearing on umpire uniforms during all games. FTX is MLB's first-ever umpire uniform patch partner. On November 11, 2022, FTX filed for Chapter 11 bankruptcy protection.


Season structure


Spring training

Spring training Spring training is the preseason in Major League Baseball (MLB), a series of practices and exhibition games preceding the start of the regular season. Spring training allows new players to try out for Schedule (workplace), roster and position spo ...
is a series of practices and exhibition games preceding the start of the regular season. Teams hold training camps in the states of Arizona and Florida, where the early warm weather allows teams to practice and play without worrying about the late winter cold. Spring training allows new players to compete for roster and position spots and gives existing team players practice time prior to competitive play. The teams that hold spring training in Arizona are grouped into the
Cactus League Spring training is the preseason in Major League Baseball (MLB), a series of practices and exhibition games preceding the start of the regular season. Spring training allows new players to try out for roster and position spots, and gives establ ...
, while teams that hold camp in Florida are known as the
Grapefruit League Spring training is the preseason in Major League Baseball (MLB), a series of practices and exhibition games preceding the start of the regular season. Spring training allows new players to try out for roster and position spots, and gives establi ...
. Spring training has always attracted fan attention, drawing crowds who travel to the warmer climates to enjoy the weather and watch their favorite teams play, and spring training usually coincides with spring break for many college students. Autograph seekers also find greater access to players during spring training. Spring training typically lasts almost two months, starting in mid-February and running until just before the season-opening day, traditionally the first week of April. As pitchers benefit from a longer training period, pitchers and catchers begin spring training several days before the rest of the team.


Regular season

Each team plays 162 games per season. A team's schedule is typically organized into three-game
series Series may refer to: People with the name * Caroline Series (born 1951), English mathematician, daughter of George Series * George Series (1920–1995), English physicist Arts, entertainment, and media Music * Series, the ordered sets used in ...
, sets of consecutive games against the same opponent, with occasional two- or four-game series. Postponed games or continuations of suspended games can result in an ad hoc one-game or five-game series. All games of a series are usually hosted by the same team and multiple series are typically grouped together. I.e, a team usually hosts several series in a row, called a homestand, and follows that by going on several road series in a row. Teams generally play games five to seven days per week. Most games are scheduled at night, although teams will often play day games on Opening Day, holidays, and for the last game of a series to allow teams extra time to travel to their next opponent. Sunday games are generally played during the afternoon, allowing teams to travel to their next destination prior to a Monday night game. In the current three-division structure, each team plays 19 games against each of its four divisional opponents. It plays one home series and one away series, amounting to six or seven games, against the 10 other teams in its league. A team also plays one of the divisions in the other league, rotating each year, with two opponents in a three-game home series, two in a three-game away series, and one with four games split between home and away. Furthermore, each team has an interleague "natural rival" (in many cases its counterpart in the same metro area) with which it plays two home games and two away games each year. With an odd number of teams in each league (15), it is necessary to have two teams participate in interleague play for most days in the season, except when two or more teams have a day off. Each team plays 20 interleague games throughout the season, usually with just one interleague game per day, but for one weekend in late May, all teams will participate in an interleague series. Before 2013, interleague play was structured differently: there would be one weekend in mid-May and another period consisting typically of the last two-thirds of June in which all teams played interleague games (save for two NL teams each day), and no interleague games were scheduled outside those dates. (Before 2013, season-long interleague play was not necessary, because each league had an even number of teams. In 2013, the Houston Astros moved to the American League, so that each league would have 15 teams.) Prior to the adoption of the universal designated hitter in 2022, whether the DH was in use depended on whether the home team was from the AL, where the DH was used, or the NL, where it was not. Starting with the 2023 season, the scheduling formula is set to change, with each team playing at least one series against every other team every year. Each team will play 14 games against teams in the same division, with one 3-game and one 4-game series at each park, six games against teams within the same league but in other divisions, with one 3-game series at each park, and one 3-game series against teams in the other league, alternating home teams each year, except for each team's designated interleague rival, which will continue to consist of two 2-game series at each of the teams' home parks. Beginning with the 2022 season, teams compete for the six
playoff The playoffs, play-offs, postseason or finals of a sports league are a competition played after the regular season by the top competitors to determine the league champion or a similar accolade. Depending on the league, the playoffs may be eithe ...
berths in their respective leagues. To secure a berth, a team must either win its
division Division or divider may refer to: Mathematics *Division (mathematics), the inverse of multiplication *Division algorithm, a method for computing the result of mathematical division Military *Division (military), a formation typically consisting ...
or capture a wild card spot by having one of the three best records among the non-winners in its entire league. With the adoption of a third wild card, the former practice of breaking ties with an additional regular-season game, known as
game 163 A tie-breaker was required in Major League Baseball (MLB) when two or more teams were tied at the end of the regular season for a postseason position such as a league pennant (prior to the introduction of the League Championship Series in 1969 ...
, was dropped in favor of a tie-breaker formula.


All-Star Game

In early-to-mid July, just after the midway point of the season, the Major League Baseball All-Star Game is held during a four-day break from the regular-season schedule. The All-Star Game features a team of players from the American League (AL)—led by the manager of the previous AL World Series team—and a team of players from the National League (NL), similarly managed, in an exhibition game. From 1959 to 1962, two games were held each season, one was held in July and one was held in August. The designated-hitter rule was used in the All-Star Game for the first time in 1989. Following games used a DH when the game was played in an AL ballpark. Since 2010, the DH rule has been in effect regardless of venue. The first official All-Star Game was held as part of the
1933 World's Fair A Century of Progress International Exposition, also known as the Chicago World's Fair, was a world's fair held in the city of Chicago, Illinois, United States, from 1933 to 1934. The fair, registered under the Bureau International des Expositi ...
in Chicago, Illinois, and was the idea of
Arch Ward Archie Burdette Ward (December 27, 1896 – July 9, 1955) was an American journalist who served as sports editor for the ''Chicago Tribune''. He was the creator of the Major League Baseball All-Star Game and the Golden Gloves amateur boxing tourna ...
, then sports editor for ''
The Chicago Tribune The ''Chicago Tribune'' is a daily newspaper based in Chicago, Illinois, United States, owned by Tribune Publishing. Founded in 1847, and formerly self-styled as the "World's Greatest Newspaper" (a slogan for which WGN radio and television ar ...
''. Initially intended to be a one-time event, its great success resulted in making the game an annual one. Ward's contribution was recognized by Major League Baseball in 1962 with the creation of the "Arch Ward Trophy", given to the All-Star Game's Most Valuable Player each year. (In 1970, it was renamed the Commissioner's Trophy, until 1985, when the name change was reversed. In 2002, it was renamed the Ted Williams Most Valuable Player Award.) Beginning in 1947, the eight position players in each team's starting lineup have been voted into the game by fans. The fan voting was discontinued after a 1957 ballot-box-stuffing scandal in Cincinnati: seven of the eight slots originally went to
Reds Reds may refer to: General * Red (political adjective), supporters of Communism or socialism * Reds (January Uprising), a faction of the Polish insurrectionists during the January Uprising in 1863 * USSR (or, to a lesser extent, China) during th ...
players, two of whom were subsequently removed from the lineup to make room for Willie Mays and
Hank Aaron Henry Louis Aaron (February 5, 1934 – January 22, 2021), nicknamed "Hammer" or "Hammerin' Hank", was an American professional baseball right fielder who played 23 seasons in Major League Baseball (MLB), from 1954 through 1976. One of the gre ...
. Fan voting was reinstated in 1970 and has continued ever since, including Internet voting in recent years. The 2002 contest in Milwaukee controversially ended in an 11-inning tie when both managers ran out of pitchers. In response, starting in 2003 the league which wins the All-Star game received home-field advantage in the World Series: the league champion hosted the first two games at its own ballpark as well as the last two (if necessary). The National League did not win an All-Star game and thus gain a home-field advantage until 2010; it was able to overcome this disadvantage and win in three of the seven World Series from 2003 to 2009. This was discontinued after the 2016 season. MLB All-Stars from both leagues have worn uniforms from their respective teams at the game with one exception. In the 1933 All-Star Game, the National League All-Star Team members wore special gray uniforms with "National League" written in navy blue letters across the front of the jersey. On July 3, 2020, it was announced that the 2020 Major League Baseball All-Star Game scheduled to be held in Los Angeles would not be played due to the
COVID-19 pandemic The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identif ...
. As compensation, Los Angeles was awarded the next available All-Star Game in 2022.


Postseason

The regular season ends after the first Sunday in October (or the last Sunday in September), after which twelve teams enter the postseason playoffs. These twelve teams consist of the six division champions and six "wild-card" teams: the team with the best overall
win–loss record In sports, a winning percentage is the fraction of games or matches a team or individual has won. The statistic is commonly used in standings or rankings to compare teams or individuals. It is defined as wins divided by the total number of matc ...
in each of the six divisions, and the three teams in each league with the best records other than the division champions. Four rounds of series of games are played to determine the champion: #
Wild Card Series The Wild Card Series (formerly known as Wild Card Game from 2012 to 2019 and in 2021) are games that serve as the opening round of the Major League Baseball (MLB) Major League Baseball postseason, postseason. A single wild card game was first ...
, a best of three games playoff between the lowest seeded division champion and three "wild-card teams", the higher seeds will host all three games #
American League Division Series In Major League Baseball, the American League Division Series (ALDS) determines which two teams from the American League will advance to the American League Championship Series. The Division Series consists of two best-of-five series, featuring ea ...
and
National League Division Series In Major League Baseball, the National League Division Series (NLDS) determines which two teams from the National League will advance to the National League Championship Series. The Division Series consists of two best-of-five series, featuring ...
, each a best-of-five-games series. #
American League Championship Series The American League Championship Series (ALCS) is a best-of-seven playoff and one of two League Championship Series comprising the penultimate round of Major League Baseball's (MLB) postseason. It is contested by the two winners of the American ...
and
National League Championship Series The National League Championship Series (NLCS) is a best-of-seven playoff and one of two League Championship Series comprising the penultimate round of Major League Baseball's (MLB) postseason. It is contested by the winners of the two National ...
, each a best-of-seven-games series played between the winning teams from the Division Series. The league champions are referred to as the pennant winners. #
World Series The World Series is the annual championship series of Major League Baseball (MLB) in the United States and Canada, contested since 1903 between the champion teams of the American League (AL) and the National League (NL). The winner of the World ...
, a best-of-seven-games series played between the pennant winners of each league. Within each league, the division winners are the No. 1, No. 2, and No. 3 seeds, based on win–loss records. The team with the best record among non-division winners will be the first wildcard and the No. 4 seed. The team with the second-best record among non-division winners will be the second wildcard and the No. 5 seed. The team with the third-best record will the third wild card and the No 6. seed In the wildcard round, the No. 3 seed will host the No 6 seed and the No. 4 seed with host the No 5 seed with the higher team host all three games in the Wild Card Series . For the division series, the matchup will be the No. 1 seed against the winner of the No 3 and No 6 seed and the No. 2 seed against the winner of No 4 and No 5 seed, unlike the NFL there will be no reseeding Since 2017, home-field advantage in the World Series is determined by regular-season records of the two league champions, replacing a system used for the prior 14 seasons where the champion of the league that won the All-Star Game would receive home-field advantage. Because each postseason series is split between the home fields of the two teams, the home-field advantage does not usually play a large role in the postseason unless the series goes to its maximum number of games, giving one team an additional game at home. However, the first two games of a postseason series are hosted by the same team. That team may have an increased chance of starting the series with two wins,World Series The World Series is the annual championship series of Major League Baseball (MLB) in the United States and Canada, contested since 1903 between the champion teams of the American League (AL) and the National League (NL). The winner of the World ...
">
World Series The World Series is the annual championship series of Major League Baseball (MLB) in the United States and Canada, contested since 1903 between the champion teams of the American League (AL) and the National League (NL). The winner of the World ...
, sec. 3.2.2 (Game-by-Game), note 2; as of 2008, the 1981 Los Angeles Dodgers are the last team to win a World Series after losing the first two games on the road.
thereby gaining some momentum for the rest of the series.


International play

Since 1986 an All-Star team from MLB is sent to a biennial end-of-the-season tour of Japan, dubbed as
MLB Japan All-Star Series The MLB Japan All-Star Series is an irregular end-of-the-season tour of Japan made by an All-Star team from Major League Baseball (MLB) since 1986, contested in a best-of format against the All-Stars from Nippon Professional Baseball (NPB) or ...
, playing exhibition games in a best-of format against the All-Stars from
Nippon Professional Baseball or NPB is the highest level of baseball in Japan. Locally, it is often called , meaning ''Professional Baseball''. Outside Japan, it is often just referred to as "Japanese baseball". The roots of the league can be traced back to the formation ...
(NPB) or recently as of 2014 their national team Samurai Japan. In 2008, MLB played the
MLB China Series The Major League Baseball China Series, or MLB China Series, were two spring training games between the San Diego Padres and Los Angeles Dodgers played in the People's Republic of China. It marked the first time Major League Baseball teams play ...
in the People's Republic of China. It was a series of two spring-training games between the San Diego Padres and Los Angeles Dodgers. The games were an effort to popularize baseball in China. MLB played the
MLB Taiwan All-Star Series The MLB Taiwan All-Star Series was an end-of-the-season tour of Taiwan made by an All-Star team from Major League Baseball (MLB) after 2011 MLB season, contested in a best-of format against the Chinese Taipei national baseball team. The series ...
in Taiwan in November 2011. It was a series of five exhibition games played by a team made up of MLB players called the MLB All-Stars and the
Chinese Taipei national baseball team The Chinese Taipei baseball team () is the national men's baseball team of the Republic of China (Taiwan). It is governed by the Chinese Taipei Baseball Association. The team is ranked second in the world by the World Baseball Softball Confeder ...
. The MLB All-Stars swept the series, five games to zero. At the end of the 2011 season, it was announced that the
Seattle Mariners The Seattle Mariners are an American professional baseball team based in Seattle. They compete in Major League Baseball (MLB) as a member club of the American League (AL) American League West, West division. The team joined the American League ...
and the
Oakland Athletics The Oakland Athletics (often referred to as the A's) are an American professional baseball team based in Oakland, California. The Athletics compete in Major League Baseball (MLB) as a member club of the American League (AL) West division. The te ...
would play their season openers in Japan. In October 2013, Phil Rogers of the ''
Chicago Tribune The ''Chicago Tribune'' is a daily newspaper based in Chicago, Illinois, United States, owned by Tribune Publishing. Founded in 1847, and formerly self-styled as the "World's Greatest Newspaper" (a slogan for which WGN radio and television ar ...
'' wrote that MLB was considering postseason all-star tours in Taiwan and Korea; baseball is increasing in popularity in both countries. The
Arizona Diamondbacks The Arizona Diamondbacks (colloquially known as the D-backs) are an American professional baseball team based in Phoenix. The Diamondbacks compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. The f ...
opened the 2014 season against
Los Angeles Dodgers The Los Angeles Dodgers are an American professional baseball team based in Los Angeles. The Dodgers compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. Established in 1883 in the city of Brooklyn ...
on March 22–23 in Australia. The teams played each other at the historic
Sydney Cricket Ground The Sydney Cricket Ground (SCG) is a sports stadium in Sydney, Australia. It is used for Test cricket, Test, One Day International and Twenty20 cricket, as well as, Australian rules football and occasionally for rugby league, rugby union and as ...
, which has a seating capacity of 46,000. The two games represented the first MLB regular-season play held in that country. The games counted as home games for the
Diamondbacks The Arizona Diamondbacks (colloquially known as the D-backs) are an American professional baseball team based in Phoenix. The Diamondbacks compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. The f ...
, so they played 79 home games at
Chase Field Chase Field, formerly Bank One Ballpark, is a retractable roof stadium in Downtown Phoenix, Arizona. It is the home of Major League Baseball's Arizona Diamondbacks. It opened in 1998 Arizona Diamondbacks season, 1998, the year the Diamondbacks ...
. In 2019, the
Red Sox The Boston Red Sox are an American professional baseball team based in Boston. The Red Sox compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. Founded in as one of the American League's eight ...
were the home team in a regular-season two-game series against the
Yankees The New York Yankees are an American professional baseball team based in the New York City borough of the Bronx. The Yankees compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. They are one of ...
. The games, which were the first regular-season
MLB Major League Baseball (MLB) is a professional baseball organization and the oldest major professional sports league in the world. MLB is composed of 30 total teams, divided equally between the National League (NL) and the American League (AL), ...
games held in Europe, were played on June 29–30 at
London Stadium London Stadium (formerly and also known as Olympic Stadium and the Stadium at Queen Elizabeth Olympic Park) is a multi-purpose outdoor stadium at Queen Elizabeth Olympic Park in the Stratford, London, Stratford district of London. It is located ...
with the Yankees winning both games. Together with the
World Baseball Softball Confederation World Baseball Softball Confederation (WBSC; french: Confédération internationale de baseball et softball) is the world governing body for the sports of baseball, softball, and Baseball5. It was established in 2013 by the merger of the Inter ...
, MLB sponsors the
World Baseball Classic The World Baseball Classic (WBC) is an international baseball tournament sanctioned from 2006 to 2013 by the International Baseball Federation (IBAF) and after 2013 by World Baseball Softball Confederation (WBSC) in partnership with Major Leagu ...
, an international baseball tournament contested by national teams.


Performance-enhancing drugs

In 1998, both
Mark McGwire Mark David McGwire (born October 1, 1963), nicknamed "Big Mac", is an American former professional baseball first baseman who played 16 seasons in Major League Baseball (MLB) from 1986 to 2001 for the Oakland Athletics and the St. Louis Cardi ...
and
Sammy Sosa Samuel Peralta Sosa (born November 12, 1968) is a Dominican-American former professional baseball right fielder. He played in Major League Baseball (MLB) for 19 seasons, primarily with the Chicago Cubs. After playing for the Texas Rangers and C ...
hit more
home run In baseball, a home run (abbreviated HR) is scored when the ball is hit in such a way that the batter is able to circle the bases and reach home plate safely in one play without any errors being committed by the defensive team. A home run i ...
s than the record of 61 set by Yankees right fielder
Roger Maris Roger Eugene Maris (September 10, 1934 – December 14, 1985) was an American professional baseball right fielder who played 12 seasons in Major League Baseball (MLB). He is best known for setting a new MLB single-season home run record with 61 ...
in 1961.
Barry Bonds Barry Lamar Bonds (born July 24, 1964) is an American former professional baseball left fielder who played 22 seasons in Major League Baseball (MLB). Bonds was a member of the Pittsburgh Pirates from 1986 to 1992 and the San Francisco Giants f ...
topped the record in 2001 with 73 home runs. McGwire, Bonds, and Sosa became the subjects of speculation regarding the use of performance-enhancing substances. McGwire later admitted that he used a steroid hormone that was still legal in baseball during the 1998 season. Baseball's original steroid testing policy, in effect from 2002 to 2005, provided for penalties ranging from a ten-game suspension for a first positive test to a one-year suspension for a fourth positive test. Players were tested at least once per year, with the chance that several players could be tested many times per year. A 2006 book, ''
Game of Shadows ''Game of Shadows: Barry Bonds, BALCO, and the Steroids Scandal that Rocked Professional Sports'' is a bestselling non-fiction book published on March 23, 2006, and written by Mark Fainaru-Wada and Lance Williams, reporters for the ''San Franc ...
'' by ''
San Francisco Chronicle The ''San Francisco Chronicle'' is a newspaper serving primarily the San Francisco Bay Area of Northern California. It was founded in 1865 as ''The Daily Dramatic Chronicle'' by teenage brothers Charles de Young and M. H. de Young, Michael H. de ...
'' investigative reporters
Lance Williams and Mark Fainaru-Wada Lance Williams and Mark Fainaru-Wada co-authored the book ''Game of Shadows'' while they were reporters for the ''San Francisco Chronicle''. For their investigative work in the field of steroids, Williams and Fainaru-Wada were given the 2004 Georg ...
, chronicled alleged extensive use of performance enhancers, including several types of steroids and
growth hormone Growth hormone (GH) or somatotropin, also known as human growth hormone (hGH or HGH) in its human form, is a peptide hormone that stimulates growth, cell reproduction, and cell regeneration in humans and other animals. It is thus important in h ...
by baseball superstars Barry Bonds,
Gary Sheffield Gary Antonian Sheffield (born November 18, 1968) is an American former professional baseball outfielder who played in Major League Baseball for eight teams from 1988 to 2009. He is a sports agent. For most of his career, Sheffield played right ...
, and
Jason Giambi Jason Gilbert Giambi (; born January 8, 1971) is an American former professional baseball first baseman and designated hitter. In his Major League Baseball (MLB) career, which began in 1995, Giambi played for the Oakland Athletics, New York Yank ...
. Former
Senate Majority Leader The positions of majority leader and minority leader are held by two United States senators and members of the party leadership of the United States Senate. They serve as the chief spokespersons for their respective political parties holding t ...
George Mitchell was appointed by Selig on March 30, 2006 to investigate the use of performance-enhancing drugs in MLB. The appointment was made after several influential members of the
U.S. Congress The United States Congress is the legislature of the federal government of the United States. It is Bicameralism, bicameral, composed of a lower body, the United States House of Representatives, House of Representatives, and an upper body, ...
made negative comments about both the effectiveness and honesty of MLB's drug policies and Commissioner Selig. The day before the
Mitchell Report The ''Report to the Commissioner of Baseball of an Independent Investigation into the Illegal Use of Steroids and Other Performance Enhancing Substances by Players in Major League Baseball'', informally known as the Mitchell Report, is the res ...
was to be released in 2007, Selig said, "I haven't seen the report yet, but I'm proud I did it." The report said that after mandatory random testing began in 2004, HGH treatment for athletic enhancement became popular among players, as HGH is not detectable in tests. It pointed out that HGH is likely a placebo with no performance-enhancing effects. The report included substance use allegations against at least one player from each MLB team. According to
ESPN ESPN (originally an initialism for Entertainment and Sports Programming Network) is an American international basic cable sports channel owned by ESPN Inc., owned jointly by The Walt Disney Company (80%) and Hearst Communications (20%). The ...
, some people questioned whether Mitchell's director role with the Boston Red Sox created a conflict of interest, especially because no "prime oxplayers were in the report." The report named several prominent Yankees who were parts of World Series clubs; there is a long-running and fierce
Yankees–Red Sox rivalry The Yankees–Red Sox rivalry is a Major League Baseball (MLB) rivalry between the New York Yankees and the Boston Red Sox. Both teams have competed in MLB's American League (AL) for over 120 seasons and have since developed what is arguably ...
. Former U.S. prosecutor
John M. Dowd John Maguire Dowd (born November 2, 1941) is an American attorney, former attorney for the United States Department of Justice, and former United States Marine Corps Judge Advocate Division, Marine Corps Judge Advocate. Dowd was employed by seve ...
brought up Mitchell's conflict of interest, but he later said that the former senator had done a good job. Mitchell acknowledged that his "tight relationship with Major League Baseball left him open to criticism", but he said that readers who examine the report closely "will not find any evidence of bias, of special treatment of the Red Sox". On January 10, 2013, MLB and the players union reached an agreement to add random, in-season HGH testing. They also agreed to implement a new test to reveal the use of
testosterone Testosterone is the primary sex hormone and anabolic steroid in males. In humans, testosterone plays a key role in the development of Male reproductive system, male reproductive tissues such as testes and prostate, as well as promoting secondar ...
for the 2013 season. The current MLB drug policy provides for an 80-game suspension for a first positive test, a 162-game suspension for a second positive test, and a lifetime suspension for a third positive test. In 2009, allegations surfaced against
Alex Rodriguez Alexander Emmanuel Rodriguez (born July 27, 1975), nicknamed "A-Rod", is an American former professional baseball shortstop and third baseman, businessman and philanthropist. Rodriguez played 22 seasons in Major League Baseball (MLB) for the ...
and David Ortiz, and
Manny Ramirez Manuel ArĂ­stides RamĂ­rez Onelcida (born May 30, 1972) is a Dominican-American former professional baseball outfielder. He played in Major League Baseball (MLB) for parts of 19 seasons. He played with the Cleveland Indians, Boston Red Sox, L ...
received a 50-game suspension after testing positive for banned substances. In early April 2011, Ramirez retired from baseball rather than face a 100-game suspension for his second positive steroid test. He would later unretire, having the suspension dropped to 50 games, and would serve those in 2012.


Media coverage


Television

Several networks televise baseball games, including
Fox Foxes are small to medium-sized, omnivorous mammals belonging to several genera of the family Canidae. They have a flattened skull, upright, triangular ears, a pointed, slightly upturned snout, and a long bushy tail (or ''brush''). Twelve sp ...
,
ESPN ESPN (originally an initialism for Entertainment and Sports Programming Network) is an American international basic cable sports channel owned by ESPN Inc., owned jointly by The Walt Disney Company (80%) and Hearst Communications (20%). The ...
, TBS, and
MLB Network The MLB Network is an American television sports channel dedicated to baseball. It is primarily owned by Major League Baseball, with Warner Bros. Discovery through its sports unit, Comcast's NBC Sports Group, Charter Communications, and Cox C ...
. Since 2008, Fox Sports has broadcast MLB games on ''
Fox Saturday Baseball ''Fox Saturday Baseball'' is an American television presentation of Major League Baseball (MLB) games produced by Fox Sports for the Fox network on Saturday afternoons. Fox's coverage includes 4 weeks worth of coverage as of 2023. Coverage usual ...
'' throughout the entire season; Fox previously only broadcast games from May to September. Fox also holds rights to the All-Star Game each season. Fox also alternates League Championship Series broadcasts, broadcasting the
American League Championship Series The American League Championship Series (ALCS) is a best-of-seven playoff and one of two League Championship Series comprising the penultimate round of Major League Baseball's (MLB) postseason. It is contested by the two winners of the American ...
(ALCS) in odd-numbered years and the
National League Championship Series The National League Championship Series (NLCS) is a best-of-seven playoff and one of two League Championship Series comprising the penultimate round of Major League Baseball's (MLB) postseason. It is contested by the winners of the two National ...
(NLCS) in even-numbered years. Fox broadcasts all games of the World Series. ESPN continues to broadcast MLB games as well, beginning with national Opening Day coverage. ESPN broadcasts '' Sunday Night Baseball'' and ''
Baseball Tonight ''Baseball Tonight'' (stylized as ''Baseball Tonight presented by Chevrolet'' for sponsorship reasons) is an American television program that airs on ESPN. The show, which covers the day's Major League Baseball action, has been on the air since ...
''. ESPN also has rights to the Home Run Derby at the All-Star Game each July. TBS has aired Sunday afternoon regular season games (non-exclusive) nationally, but beginning in 2022 this will be replaced by Tuesday night games. In 2007, TBS began its exclusive rights to any tiebreaker games that determine division or wild card champions. It also airs exclusive coverage of the
Division Series The Division Series is the quarterfinal round of the Major League Baseball playoffs. Four series are played in this round, two each for both the American League and the National League. 1981 season The first use of the term "Division Series" date ...
round of the playoffs. TBS carries the
League Championship Series The League Championship Series (LCS) is the semifinal round of postseason play in Major League Baseball which has been conducted since 1969. In 1981, and since 1995, the two annual series have matched up the winners of the Division Series, and ...
that are not included under Fox's television agreement; TBS shows the NLCS in odd-numbered years and the ALCS in even-numbered years. In January 2009, MLB launched the
MLB Network The MLB Network is an American television sports channel dedicated to baseball. It is primarily owned by Major League Baseball, with Warner Bros. Discovery through its sports unit, Comcast's NBC Sports Group, Charter Communications, and Cox C ...
, featuring news and coverage from around the league, and airing 26 live games in the 2009 season. Each team also has local broadcasts for all games not carried by Fox on Saturdays or ESPN on Sunday nights. These games are typically split between a local broadcast television station and a local or
regional sports network In the United States and Canada, a regional sports network (RSN) is a cable television channel (many of which are also distributed on direct broadcast satellite services) that presents sports programming to a local market or geographical region. ...
(RSN), though some teams only air local games through RSNs or through their own team networks. As Canada only contains one team,
Sportsnet Sportsnet is a Canadian English-language sports specialty channel owned by Rogers Sports & Media. It was established in 1998 as CTV Sportsnet, a joint venture between CTV, Liberty Media, and Rogers Media. CTV parent Bell Globemedia then ...
broadcasts Toronto Blue Jays games nationally. The channel is owned by
Rogers Communications Rogers Communications Inc. is a Telecommunications in Canada, Canadian communications and media company operating primarily in the fields of mobile phone operator, wireless communications, cable television, telephony and Internet access, Intern ...
, who is also the parent company of the Blue Jays. Sportsnet also televises Fox's Saturday afternoon games, the All-Star Game, playoff games, and the World Series. In April 2011,
TSN2 TSN2 is a Canadian English language sports specialty channel that acts as the secondary feed of sports-centred channel The Sports Network (TSN) and owned by CTV Specialty Television Inc. It was launched in its current form on August 29, 2008. F ...
began carrying ESPN ''Sunday Night Baseball'' in Canada.
TVA Sports TVA Sports is a Canadian French-language sports specialty channel owned by the Groupe TVA, a publicly traded subsidiary of Quebecor Media. The channel is a general-interest sports network, and the first major competitor to RDS, the only other Fre ...
airs Blue Jays games in French. Several MLB games are broadcast exclusively on
Internet television Streaming television is the digital distribution of television content, such as TV shows, as streaming media delivered over the Internet. Streaming television stands in contrast to dedicated terrestrial television delivered by over-the-air a ...
. After a year of exclusive games on Facebook, MLB partnered with
YouTube YouTube is a global online video platform, online video sharing and social media, social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by ...
to stream weekly games on the service beginning in the 2019 season, and extending until 2022. In 2022, MLB made a deal with
Apple Inc. Apple Inc. is an American multinational technology company headquartered in Cupertino, California, United States. Apple is the largest technology company by revenue (totaling in 2021) and, as of June 2022, is the world's biggest company ...
to launch ''
Friday Night Baseball ''Friday Night Baseball'' is a live broadcast of Major League Baseball (MLB) games on Apple TV+ that debuted during the league's 2022 season. The weekly broadcast is produced by MLB Network, featuring a doubleheader with pregame and postgame an ...
'' on its
Apple TV+ Apple TV is a digital media player and microconsole developed and marketed by Apple Inc. It is a small network appliance hardware that plays received media data such as video and audio to a television set or external display. Since its secon ...
streaming service, and
NBC Sports NBC Sports is an American programming division of the broadcast network NBC, owned and operated by NBC Sports Group division of NBCUniversal and subsidiary of Comcast. The division is responsible for sports broadcasts on the network, and its d ...
to broadcast
MLB Sunday Leadoff ''MLB Sunday Leadoff'' is an American presentation of Major League Baseball (MLB) games produced by NBC Sports for the NBCUniversal-owned streaming service Peacock. Peacock's coverage will include 18 Sunday regular season games during the 20 ...
, a package of early Sunday afternoon games on
Peacock Peafowl is a common name for three bird species in the genera ''Pavo (genus), Pavo'' and ''Afropavo'' within the tribe Pavonini of the family Phasianidae, the pheasants and their allies. Male peafowl are referred to as peacocks, and female pea ...
.


Blackout policy

MLB has several blackout rules. A local broadcaster has priority to televise games of the team in their market over national broadcasters if the game is not exclusive to the national broadcaster. A market that has a local team playing in a non-exclusive game will receive an alternative programming feed on the national broadcaster. MLB's streaming internet video service is also subject to the same blackout rules.


Radio and Internet

ESPN Radio ESPN Radio, which is alternately platform-agnostically branded as ESPN Audio, is an American sports radio network and extension of the ESPN television network. It was launched on January 1, 1992, under the original banner of "SportsRadio ESPN". ...
holds national broadcast rights and broadcasts ''Sunday Night Baseball'' weekly throughout the season in addition to all playoff games. The rights to the World Series are exclusive to ESPN. In 2021,
TUDN Radio TUDN Radio (formerly Univision Deportes Radio) is a U.S. Spanish-language sports radio network operated by Uforia Audio Network, a division of TelevisaUnivision. It launched on March 15, 2017 on ten AM and FM radio stations, most of which previ ...
picked up Spanish-language rights to MLB games, starting with that year's postseason. In addition, each team employs its own announcers, who broadcast during the regular season. Most teams operate regional networks to cover their fan bases; some of these supposedly regional networks (such as the
New York Yankees Radio Network The New York Yankees Radio Network is an Audacy-owned radio network that broadcasts New York Yankees baseball games to 52 stations across 14 states. The network's flagship station is WFAN, which succeeded sister station WCBS as the flagship in 2 ...
) have a national reach with affiliates located across the United States. Major League Baseball has an exclusive rights deal with
XM Satellite Radio XM Satellite Radio (XM) was one of the three satellite radio (SDARS) and online radio services in the United States and Canada, operated by Sirius XM Holdings. It provided pay-for-service radio, analogous to subscription cable television. Its s ...
, which includes the channel
MLB Network Radio MLB Network Radio (formerly MLB Home Plate) is an American sports talk radio station on Sirius XM Radio that features Major League Baseball related talk shows, as well as archives and live reports about MLB and such. MLB Home Plate launched in F ...
and live play-by-play of all games. Many teams also maintain a network of stations that broadcast their games in Spanish; , the
Los Angeles Dodgers The Los Angeles Dodgers are an American professional baseball team based in Los Angeles. The Dodgers compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. Established in 1883 in the city of Brooklyn ...
are the only team that produces radio broadcasts in a third language, with selected games broadcast in Korean. Both Canadian teams (the
Montreal Expos The Montreal Expos (french: link=no, Les Expos de Montréal) were a Canadian professional baseball team based in Montreal, Quebec. The Expos were the first Major League Baseball (MLB) franchise located outside the United States. They played in t ...
before their move to Washington, DC in 2005, and the
Toronto Blue Jays The Toronto Blue Jays are a Canadian professional baseball team based in Toronto. The Blue Jays compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. Since 1989, the team has played its home games ...
) have produced radio broadcasts in French. MLB games are also broadcast live on the internet. All television and radio broadcasts of games are available via subscription to
MLB.tv MLB.com is the official site of Major League Baseball and is overseen by Major League Baseball Advanced Media, L.P. (a subsidiary of MLB). MLB.com is a source of baseball-related information, including baseball news, statistics, and sports column ...
at Major League Baseball's website, MLB.com, and radio-only broadcasts are also available via subscription to MLB.com Gameday Audio. Radio station affiliates are officially forbidden from streaming games through their Internet feeds. Blackout rules are still applied for live television broadcasts, but not radio broadcasts.


International broadcasting

ESPN Deportes ESPN Deportes (, ''ESPN Sports'') is an American multinational Spanish-language pay television sports channel owned by ESPN Inc., a joint venture between The Walt Disney Company (which owns a controlling 80% stake) and Hearst Communications (whi ...
televises many MLB games in Spanish throughout Latin America. Wapa 2 airs games in
Puerto Rico Puerto Rico (; abbreviated PR; tnq, Boriken, ''Borinquen''), officially the Commonwealth of Puerto Rico ( es, link=yes, Estado Libre Asociado de Puerto Rico, lit=Free Associated State of Puerto Rico), is a Caribbean island and Unincorporated ...
, including spring training games and most of the World Baseball Classic games involving the team from Puerto Rico. In Brazil,
ESPN Brasil ESPN is the Brazilian division of ESPN Inc. Launched in March 1989 as Canal+, it was the first country-specific version of ESPN outside the United States, launched in June 1995. The channel has covered major sporting events, like the 1996, 2000, ...
has exclusive rights on TV (ESPN and ESPN2) and Internet (
WatchESPN WatchESPN was a branding of the Internet television website and mobile application operated by ESPN Inc., a joint venture between The Walt Disney Company (which operates the network, through its 80% controlling ownership interest) and Hearst C ...
),.
Five 5 is a number, numeral, and glyph. 5, five or number 5 may also refer to: * AD 5, the fifth year of the AD era * 5 BC, the fifth year before the AD era Literature * ''5'' (visual novel), a 2008 visual novel by Ram * ''5'' (comics), an awa ...
in the United Kingdom previously screened MLB games, including the All-Star Game and the
postseason The playoffs, play-offs, postseason or finals of a sports league are a competition played after the regular season by the top competitors to determine the league champion or a similar accolade. Depending on the league, the playoffs may be eithe ...
games, on Sunday and Wednesday usually starting at 1 a.m. BST. Most recently,
Johnny Gould Jonathan Michael Gould (born 1961 in Kenya) is a British television presenter and charity fundraiser. He is best known for hosting the late-night baseball show ''MLB on Five'' from 1997 until 2008, which soon built up a cult following on the n ...
and
Josh Chetwynd Joshua Stephen Chetwynd (born September 11, 1971) is a British-born American journalist, broadcaster, author, sports agent and former baseball player. He has also competed in the sport of curling. Journalism Chetwynd has worked as a staff repor ...
presented ''
MLB on Five ''MLB on Five'' was a sports television programme on Channel 5 in the UK providing live coverage of Major League Baseball games, broadcast between 1997 and 2008. It was usually broadcast on Sunday (going into Monday morning) and Wednesday night ...
'' on that station. The channel covered baseball beginning on its opening night in 1997, but for financial reasons, the decision was made not to pick up MLB for the 2009 season. BT Sport ESPN show live and recorded games several times a week—it is available with
BT Sport BT Sport is a group of broadcasting of sports events, pay television sports channels in the United Kingdom and Republic of Ireland, Ireland. Owned by Warner Bros. Discovery Sports#Warner Bros. Discovery Sports Europe properties, Warner Bros. Dis ...
and (on a subscriber-basis)
Virgin Media Virgin Media is a British telecommunications company which provides telephone, Cable television, television and Internet access, internet services in the United Kingdom. Its headquarters are at Green Park in Reading, Berkshire, Reading, Engla ...
in the UK.
ESPN America ESPN America was a British-based European sports network, focusing on professional and collegiate sports of the United States and Canada. Originally launched on 5 December 2002 as NASN (the ''North American Sports Network''), ESPN America broadca ...
televised many games in the UK and dozens of other countries; in May 2013, ESPN announced that it would shut down the channel on July 31, 2013. In Australia, MLB games are regularly shown on
ESPN Australia ESPN Australia is the Australian division of ESPN, part of the ESPN International grouping. It is offered in Australia, New Zealand, Papua New Guinea and the Pacific Islands. Initially, ESPN was known as Sports ESPN on the Optus Vision cable t ...
(subscription). In the Middle East, North Africa and France, MLB games are broadcast on
beIN Sports beIN Sports ( ) is a global network of sports channels owned and operated by the Qatari media group beIN. It has played a major role in the increased commercialization of Qatari sports. Its chairman is Nasser Al-Khelaifi, and its CEO is Yousef O ...
channels. In Germany MLB games will be broadcast from 2022 exclusively on
Sport1 Sport1 may refer to the following TV channels: * Sport1 (Eastern Europe) * Sport1 (Germany) * Sport1 (Lithuania) * Sport1 (Netherlands) Sport1 may refer to the following TV channels: * Sport1 (Eastern Europe) * Sport1 (Germany) * Sport1 (Lithuani ...
until 2026. In Hungary, MLB games are broadcast on
Sport1 Sport1 may refer to the following TV channels: * Sport1 (Eastern Europe) * Sport1 (Germany) * Sport1 (Lithuania) * Sport1 (Netherlands) Sport1 may refer to the following TV channels: * Sport1 (Eastern Europe) * Sport1 (Germany) * Sport1 (Lithuani ...
as of 2020.


See also

*
Australian Baseball League The Australian Baseball League (ABL) is a professional baseball league in Australia. The league is governed by the Australian Baseball Federation (ABF). It uses the same name as a now-defunct competition held during the 1990s, and though it sh ...
*
Baseball Assistance Team The Baseball Assistance Team is a 501(c)(3) non-profit organization affiliated with Major League Baseball. The organization's mission is to "confidentially support members of the ''Baseball Family'' in need of assistance." The baseball family inc ...
(B.A.T.) *
Baseball in Canada Baseball in Canada dates back to the 19th century, and is played at various levels of competition throughout the country. There is currently one Major League Baseball (MLB) team, the Toronto Blue Jays, founded in 1977. Canada's first MLB team, ...
*
Baseball in the United States In the United States, baseball is one of the most popular sports for both participants and spectators. The highest level of baseball in the U.S. is Major League Baseball. The World Series of Major League Baseball is the culmination of the sport's ...
*
Bob Feller Act of Valor Award The Bob Feller Act of Valor Award, created in 2013, is a set of awards originally presented annually to a member of the National Baseball Hall of Fame, a current Major League Baseball player, and a United States Navy Chief Petty Officer. In 2015 ...
* Comparison of Major League Baseball and Nippon Professional Baseball * List of all-time Major League Baseball win–loss records * List of American and Canadian cities by number of major professional sports franchises *
List of current Major League Baseball stadiums There are 30 stadiums in use by Major League Baseball (MLB) teams. The oldest ballpark is Fenway Park in Boston, home of the Boston Red Sox, which opened in 1912. The newest stadium is Globe Life Field in Arlington, Texas, home of the Texas Ran ...
*
List of former Major League Baseball stadiums The following is a list of ballparks previously used by professional baseball teams. In addition to the current National League, National (NL) and American League, American (AL) leagues, Major League Baseball recognizes four short-lived other leag ...
*
List of Major League Baseball awards Major League Baseball presents a variety of annual awards and trophies to recognize both its teams and its players. Three team trophies are awarded annually: one each to the National League and American League champions, and one of the champion ...
* List of Major League Baseball managers *
List of Major League Baseball retired numbers Major League Baseball (MLB) and its participating clubs have retired various uniform numbers over the course of time, ensuring that those numbers are never worn again and thus will always be associated with particular players or managers of n ...
* List of Major League Baseball spring training ballparks *
List of professional sports leagues This is a list of professional sports leagues. A sports league is a professional body that governs the competition of its teams. They make the rules for competition and behavior and disciplines its members as necessary. This is done through a s ...
*
List of professional sports teams in the United States and Canada This article features a listing of all professional sports teams based in the United States and Canada, in addition to teams from other countries that compete in professional leagues based in the two countries. Baseball Major League Baseb ...
*
Major League Baseball attendance records Most attended pre-season game in history 115,301 is the all-time record. It was a preseason game between the defending champions Boston Red Sox and Los Angeles Dodgers on Saturday March 29, 2008 at the Los Angeles Memorial Coliseum. Least atte ...
*
Major League Baseball draft The first-year player draft is the primary mechanism of Major League Baseball (MLB) for assigning amateur baseball players from high schools, colleges, and other amateur baseball clubs to its teams. The draft order is determined based on a lo ...
*
MLB Industry Growth Fund MLB Industry Growth Fund is a pool of money collected by Major League Baseball. The purpose of the Industry Growth Fund (IGF) is, essentially, to promote Major League Baseball. Specifically, there are three goals; to enhance fan interest in the ga ...
*
Reviving Baseball in Inner Cities Reviving Baseball in Inner Cities (RBI) is a youth baseball program operated by Major League Baseball. This youth initiative is designed to provide young people from underserved and diverse communities the opportunity to play baseball and softba ...


References


Explanatory notes


Citations


Further reading

* Banner, Stuart. ''The Baseball Trust: A History of Baseball's Antitrust Exemption.'' New York: Oxford University Press, 2013. * Bouton, Jim. ''Ball Four: My Life and Hard Times Throwing the Knuckleball in the Major Leagues''. World Publishing Company, 1970. * Buchanan, Lamont, ''The World Series and Highlights of Baseball'', E. P. Dutton & Company, 1951. * Cohen, Richard M., Neft, David, Johnson, Roland T., Deutsch, Jordan A., ''The World Series'', 1976, Dial Press. * Deutsch, Jordan A., Cohen, Richard M., Neft, David, Johnson, Roland T., ''The Scrapbook History of Baseball'', Bobbs-Merrill Company, 1975. * King, Corretta. Jackie Robinson. New York: Chelsea House Publishers, 1987. * James, Bill. ''The Historical Baseball Abstract''. New York: Villard, 1985 (with many subsequent editions). * Lanigan, Ernest, ''Baseball Cyclopedia'', 1922, originally published by ''Baseball Magazine''. * Lansch, Jerry, ''Glory Fades Away: The Nineteenth Century World Series Rediscovered'', Taylor Publishing, 1991. . * Murphy, Cait. ''Crazy '08: How a Cast of Cranks, Rogues, Boneheads, and Magnates Created the Greatest Year in Baseball History.'' New York: Smithsonian Books, 2007. . * Okkonen, Marc. ''Baseball Uniforms of the 20th Century: The Official Major League Baseball Guide'', 1991. * Ritter, Lawrence. ''The Glory of their Times''. New York: MacMillan, 1966. Revised edition, New York: William Morrow, 1984. * Ross, Brian. "Band of Brothers". ''Minor League News'', April 6, 2005. Available a
Minor League News
* Seymour, Harold. ''Baseball: The Early Years''. 2v. New York: Oxford University Press, 1960. . * Turkin, Hy, and Thompson, S. C., ''The Official Encyclopedia of Baseball'', 1951, A.S. Barnes and Company * Tygiel, Jules. ''Past Time: Baseball as History''. New York: Oxford University Press, 2000. . * ''
The New York Times ''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid ...
'', ''The Complete Book of Baseball: A Scrapbook History'', 1980, Bobbs Merrill.


External links

* *
MLB
' on YouTube {{Authority control 1869 establishments in the United States Sports leagues established in 1869 Baseball governing bodies in the United States Professional sports leagues in Canada Professional sports leagues in the United States Sports organizations established in 1869 Multi-national professional sports leagues