A sports league is a group of sports teams or individual athletes that compete against each other and gain points in a specific sport. At its simplest, it may be a local group of

amateur An amateur () is generally considered a person who pursues an avocation independent from their source of income. Amateurs and their pursuits are also described as popular, informal, autodidacticism, self-taught, user-generated, do it yourself, DI ...

athletes who form teams among themselves and compete on weekends; at its most complex, it can be an international professional league making large amounts of money and involving dozens of teams and thousands of players.

Terminology

Synonyms

In many cases, organizations that function as leagues are described using a different term, such as association,

conference A conference is a meeting of two or more experts to discuss and exchange opinions or new information about a particular topic. Conferences can be used as a form of group decision-making, although discussion, not always decisions, are the main p ...

, division, leaderboard, or series. This is especially common in individual sports, although the term "league" is sometimes used in amateur individual sports such as golf. The term "league" is also sometimes applicable to competitions that would more traditionally be called tournaments, such as the UEFA Champions League, which is organized with multiple small round-robin competitions followed by a single elimination tournament to choose an overall winner.

Leagues and league systems

"League" and its synonyms may be used to encompass either a single competition or a related group of competitions. Many groups use promotion and relegation, where the best-ranked team(s) in the ''lower division'' are ''promoted'' to the ''higher division'' for the next season, and the worst-ranked team(s) in the ''higher division'' are ''relegated'' to the ''lower division'' for the next season. Under this system, "league" may refer both to a league system, a group of leagues that are tied together in a hierarchical fashion by promotion and relegation, and to the individual leagues within the league system. For example, in English association football, the English Football League (EFL) is a league system, while the term "National League" refers both to the league immediately below the EFL in the English pyramid and to its associated league system. An alternate system of league organization which is used primarily in Australia, Canada, and the United States is a closed model which always has the same teams playing, with occasional admission of expansion teams and relocation of existing teams. There is no team movement between the higher ''major league'' and the lower ''

minor league Minor leagues are professional sports leagues which are not regarded as the premier leagues in those sports. Minor league teams tend to play in smaller, less elaborate venues, often competing in smaller cities/markets. This term is used in Nor ...

s''. In many of these closed-model leagues in Canada and the United States, they are divided into subdivisions on historical or geographical lines. These may be referred to as ''conferences'' or ''divisions''. For example, the National Football League (NFL) is divided into the

National Football Conference The National Football Conference (NFC) is one of the two conferences of the National Football League (NFL), the highest professional level of American football in the United States. The NFC and its counterpart, the American Football Conference ...

and

American Football Conference The American Football Conference (AFC) is one of the two conferences of the National Football League (NFL), the highest professional level of American football in the United States. The AFC and its counterpart, the National Football Conference ...

; the latter conference was formed largely from the remnants of the

American Football League The American Football League (AFL) was a major professional American football league that operated for ten seasons from 1960 until 1970, when it merged with the older National Football League (NFL), and became the American Football Conference. ...

after it merged with the NFL, though it now contains three original NFL teams and three expansion teams. Both the National Basketball Association (NBA) and National Hockey League (NHL) are divided into Eastern and Western Conferences. The conferences in the NFL, NBA, and NHL are further divided into subsets, all of which are called ''divisions''. These are geographically based, and teams play their divisional opponents more than any others, and then play the other clubs in their conference more than their non-conference opponents. Baseball has a unique nomenclature, with " Major League Baseball" (MLB) the name of the overall grouping of 30 teams in two "major leagues", the American League (AL) and the older National League (NL). They are titled leagues rather than conferences for several reasons. The National League predates the American by 25 years and was considered a "major" league in comparison to its early competitors, and in a sense it simply extended this recognition to the AL, the only league of similar financial clout. In addition, the leagues played no interlocking schedule of any kind until 1995, and then added only a small amount of interleague play, with the main AL-NL competition occurring between their champions in the World Series. Thus the two leagues played mostly separate competitions within the larger framework of MLB. Finally, until 2000, they were actually separate legal entities, unlike the conferences of other leagues. Nippon Professional Baseball in Japan has a similar history, with the Central League and Pacific League not founded together. Due to this naming custom, it is common to use slightly different terms to discuss MLB. Where someone might refer to "the best quarterback in the league" and be understood to mean the overall NFL, a similar mention of "the best outfielder in the league" is almost always a reference to the American National League, while "in all of baseball" or similar is used to denote the larger status. Each of the major leagues also has its own set of awards to recognize the separation between the two, which means there are two MVPs, two

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 ...

winners, etc. Since its name is constructed differently—a description of the status of two leagues rather than the title of one—it is common to hear "MLB" without "the" attached to it, as in "the most home runs in MLB this year", since one would not say "the Major League Baseball".

League organization

The common thread between all sports leagues is a structure that allows teams or individuals to compete against each other in a nonrandom order on a set schedule, usually called a ''season'', with the results of the individual competitions being used to name an overall champion. A league championship may be contested in a number of ways. Each team may play every other team a certain number of times in a

round-robin tournament A round-robin tournament (or all-go-away-tournament) is a competition Competition is a rivalry where two or more parties strive for a common goal which cannot be shared: where one's gain is the other's loss (an example of which is a zero ...

. Usually, teams play equal number of games or matches at their own stadium and at other teams', because

home advantage In team sports, the term home advantage – also called home ground, home field, home-field advantage, home court, home-court advantage, defender's advantage or home-ice advantage – describes the benefit that the home team is said to gai ...

is a major factor in many sports. When teams competing for a tournament championship do not play the same teams the same number of times, it is known as an unbalanced schedule. In such a set-up, the team with the best record becomes champion, based on either a strict win–loss–tie system or on a points system where a certain number of points are awarded for a win, loss, or tie, while bonus points might also be added for teams meeting various criteria. Many leagues also use playoffs, where after teams compete in a regular season in a league format, the top teams (possibly determined by conference or division) advance to the playoffs. In some such leagues having the best regular season record is relatively unimportant, though top-seeded teams in some leagues, such as the

NFL 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 major ...

, can gain byes to later rounds of the playoffs, and teams finishing with the best records usually have the advantage of playing the weakest teams that have advanced to the playoffs.

Alternatives to traditional league organization

While round-robin and modified round-robin competitions are the most common form of league organization, there are a number of ways to organize a sporting competition, almost all of which may be described as a "league". Many sports organizations fall on a continuum between a total lack of organization, as in a pick-up game, and a formal league such as is common at the highest level of professional team sports.

Non-league sports

The simplest form of competition is to allow teams to play each other whenever they see fit. In some sports, such as

horse racing Horse racing is an equestrian performance sport, typically involving two or more horses ridden by jockeys (or sometimes driven without riders) over a set distance for competition. It is one of the most ancient of all sports, as its basic p ...

, the main goal of the entrants is to win individual purses, and there is little or no ranking or competition outside winning certain major races. A small amount of league organization may be imposed on these non-league sports by way of a series or tournament tying several individual events together, such as the Triple Crown. Even in team sports that normally use a traditional league format, some teams often exist outside any league; these teams are generally known as barnstorming teams and either schedule games against local professional or amateur competition or bring their own competition, such as the barnstorming

Harlem Globetrotters The Harlem Globetrotters are an American exhibition basketball team. They combine athleticism, theater, and comedy in their style of play. Created in 1926 by Tommy Brookins in Chicago, Illinois, the team adopted the name ''Harlem'' because of i ...

did when they toured with the Washington Generals. As with the Globetrotters, barnstorming teams sometimes emphasize spectacle over athletic competition. In Europe, the term "cup competition" is used to describe single elimination or knock-out tournaments, where the pairing of teams in each round is determined by a "draw" (see for example, the FA Cup in England), to distinguish it from league competition, in which every club in the league or division plays the other teams a pre-determined number of times in a season, usually on a home and away basis. Further, in England, the term

non-league football Non-League football describes football leagues played outside the top leagues of a country. Usually, it describes leagues which are not fully professional. The term is primarily used for football in England, where it is specifically used to de ...

is used for historical reasons to describe association football teams that play in organized leagues, but not in the English Football League or Premier League, the two highest levels of competition in that sport in that country. Independent baseball is used similarly in the United States to describe baseball teams that play in leagues other than those sanctioned by Major League Baseball. These teams do play in leagues and should not be confused with barnstorming teams that play truly non-league schedules.

Rankings and leaderboards

Individual sports often use an alternative type of league organization where competitors are ranked against each other. In the simplest cases, such as boxing, the rankings mean little and the major competition is to crown a champion in a title fight. In other sports, the rankings and leaderboards gain importance when they are used in seeding tournaments. In some sports, points are assigned to results at individual competitions, and the resulting points are used to generate a season rankings and determine the season champion. While not usually referred to as "leagues", but "tours" or "series", these season-long competitions with set events are very similar to league structures in team sports. Examples of this are

motorsport Motorsport, motorsports or motor sport is a global term used to encompass the group of competitive sporting events which primarily involve the use of motorized vehicles. The terminology can also be used to describe forms of competition of two ...

, tennis, golf, skiing,

beach volleyball Beach volleyball is a team sport played by two teams of two or more players on a sand court divided by a net. Similar to indoor volleyball, the objective of the game is to send the ball over the net and to ground it on the opponent's side of the ...

and rugby sevens.

Conferences and informal leagues

American college sports are traditionally organized into groups of teams known as ''conferences''. These conferences ordinarily keep league tables and crown champions within the conference, as other sports leagues do, but the individual schools also schedule a certain number of "non-conference" games that are organized independently between two schools in different conferences, or between a conference team and a non-conference team. Also, national championships in some college sports are determined by a ranking or playoff system that is independent of the individual conferences.

Round-robin sports leagues

Most major team sports play some form of round-robin schedule, where the goal is for each team to play a relatively balanced schedule with each other team in the league or in its league subdivision. Within this structure, there are a few significant differences between leagues, a few of which are set forth below.

Single-table versus unbalanced schedule

The simplest way to organize a sports league, and still one of the most common, is in a double round-robin format where each team plays each other team twice, once at home and once away. This ensures that every team plays an equally difficult schedule and that no team has undue home field advantage. This organization is still used in many team sports around the world. One potential drawback of this simple double round-robin format is that the number of teams in the league determines the schedule. Larger leagues may not be able to play as many games as such a system would require, and smaller leagues may want more games. In addition, leagues whose teams are geographically spread out over a wide area (a common situation for leagues in North America) may face significant travel costs. One solution is to play an unbalanced schedule, with some teams playing additional games against some other teams; this is the way

Major League Soccer Major League Soccer (MLS) is a men's professional soccer league sanctioned by the United States Soccer Federation, which represents the sport's highest level in the United States. The league comprises 29 teams—26 in the U.S. and 3 in Canada ...

has traditionally been scheduled, with the additional games being played against local rivals. Some leagues also break the league into subunits, often known as ''divisions'' and ''conferences'', each of which may itself play a balanced or unbalanced schedule.

Central venue leagues

A "central venue league" (CVL) is a sports league where all the fixtures take place at the same venue, instead of rotating around the venues of the 'home' team, for each fixture. Several UK basketball leagues operate on this basis, intended to keep the costs of participation as low as possible,Community Basketball League
About the Community Basketball League'
accessed 11 July 2020 including:

*

Bucks Bucks may refer to: Places * Buckinghamshire, England, abbreviated Bucks * Bucks, Alabama, United States, an unincorporated community * Bucks, Illinois, United States, an unincorporated community * Bucks, Michigan, an unincorporated community ...

Central Venue League *Community Basketball League (London)
Knights Central Venue League
(Surrey Basketball Association)
Newcastle Eagles Central Venue League
established in 2002 Newcastle Eagles Community Foundation
15 Years of the Central Venue League
published 2 November 2017, accessed 11 July 2020

Cups, tournaments, and playoffs

Many sports leagues also participate in a single-elimination tournament each year. In the United States, Mexico, and some other countries, these tournaments are commonly called "playoffs" and are played at the end of the season, with the teams qualifying for the playoffs based on their performance during the season. In Europe, "cup" competitions are more common, with all teams playing in a single-elimination tournament that takes place during and parallel with the regular season.