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The fastball is the most common type of pitch thrown by
pitcher In baseball, the pitcher is the player who throws ("pitches") the baseball from the pitcher's mound toward the catcher to begin each play, with the goal of retiring a batter, who attempts to either make contact with the pitched ball or draw ...
s in
baseball Baseball is a bat-and-ball sport played between two teams of nine players each, taking turns batting and fielding. The game occurs over the course of several plays, with each play generally beginning when a player on the fielding tea ...
and
softball Softball is a game similar to baseball played with a larger ball on a smaller field. Softball is played competitively at club levels, the college level, and the professional level. The game was first created in 1887 in Chicago by George Hanc ...
. "
Power pitcher Power pitcher is a term in baseball for a pitcher who relies on pitch velocity at the expense of accuracy. Power pitchers usually record a high number of strikeouts, and statistics such as strikeouts per 9 innings pitched are common measures of ...
s," such as former American major leaguers
Nolan Ryan Lynn Nolan Ryan Jr. (born January 31, 1947), nicknamed "the Ryan Express", is an American former professional baseball pitcher and sports executive. Over a record 27-year playing career in Major League Baseball (MLB) spanning four decades, Ryan ...
and
Roger Clemens William Roger Clemens (born August 4, 1962), nicknamed "Rocket", is an American former professional baseball pitcher who played 24 seasons in Major League Baseball (MLB), primarily with the Boston Red Sox. Clemens was one of the most dominant pi ...
, rely on speed to prevent the ball from being hit and have thrown fastballs at speeds of (officially) and up to (unofficially). Pitchers who throw more slowly can put movement on the ball, or throw it on the outside of
home plate A baseball field, also called a ball field or baseball diamond, is the field upon which the game of baseball is played. The term can also be used as a metonym for a baseball park. The term sandlot is sometimes used, although this usually refers ...
where
batters Batter or batters may refer to: Common meanings * Batter (cooking), thin dough that can be easily poured into a pan * Batter (baseball), person whose turn it is to face the pitcher * Batter (cricket), a player who is currently batting * Batter ...
can't easily reach it. Fastballs are usually thrown with a
backspin In racquet sports and golf, backspin or underspin refers to the reverse rotation of a ball, in relation to the ball's trajectory, that is imparted on the ball by a slice or chop shot. Backspin generates an upward force that lifts the ball (see M ...
so that the
Magnus effect The Magnus effect is an observable phenomenon commonly associated with a spinning object moving through a fluid. The path of the spinning object is deflected in a manner not present when the object is not spinning. The deflection can be expl ...
creates an upward force on the ball. This causes it to fall less rapidly than expected, and sometimes causes an
optical illusion Within visual perception, an optical illusion (also called a visual illusion) is an illusion caused by the visual system and characterized by a visual perception, percept that arguably appears to differ from reality. Illusions come in a wide v ...
often called a rising fastball. Although it is impossible for a human to throw a baseball fast enough and with enough backspin for the ball to actually rise, to the batter the pitch seems to rise due to the unexpected lack of natural drop on the pitch. A straight pitch is achieved by gripping the ball with the fingers across the wide part of the seam (called a "
four-seam fastball A four-seam fastball, also called a rising fastball, a four-seamer, or a cross-seam fastball, is a pitch in baseball. It is a member of the fastball family of pitches and is usually the hardest (i.e., fastest) ball thrown by a pitcher. It is ca ...
") so that both the
index Index (or its plural form indices) may refer to: Arts, entertainment, and media Fictional entities * Index (''A Certain Magical Index''), a character in the light novel series ''A Certain Magical Index'' * The Index, an item on a Halo megastru ...
and
middle finger The middle finger, long finger, second finger, third finger, toll finger or tall man is the third digit of the human hand, located between the index finger and the ring finger. It is typically the longest digit. In anatomy, it is also called ...
s are touching two seams perpendicularly. A sinking fastball is thrown by gripping it across the narrow part (a "
two-seam fastball A two-seam fastball is a pitch in baseball and softball. It is a variant of the straight fastball. The pitch has the speed of a fastball and can also include late-breaking action caused by varying the pressure of the index and middle fingers on t ...
") so that both the index and middle fingers are along a seam. Lateral motion is achieved by holding a four-seam fastball off-center (a "
cut fastball In baseball, a cut fastball or cutter is a type of fastball that breaks toward the pitcher's glove-hand side, as it reaches home plate. This pitch is somewhere between a slider and a four-seam fastball, as it is usually thrown faster than a slider ...
"), and sinking action with a lateral break is thrown by splitting the fingers along the seams (a "
split-finger fastball A split-finger fastball or splitter is an off-speed pitch in baseball that looks to the batter like a fastball until it drops suddenly. Derived from the forkball, it is so named because the pitcher puts the index and middle finger on different ...
").
Colloquially Colloquialism (), also called colloquial language, everyday language or general parlance, is the style (sociolinguistics), linguistic style used for casual (informal) communication. It is the most common functional style of speech, the idiom norm ...
, a fastball pitcher "throws heat" or "puts cream on it", among many other variants.


Pitches


Four-seam fastball

The four-seam fastball is the most common variant of the fastball. The pitch is used often by the
pitcher In baseball, the pitcher is the player who throws ("pitches") the baseball from the pitcher's mound toward the catcher to begin each play, with the goal of retiring a batter, who attempts to either make contact with the pitched ball or draw ...
to get ahead in the count or when he needs to throw a
strike Strike may refer to: People *Strike (surname) Physical confrontation or removal *Strike (attack), attack with an inanimate object or a part of the human body intended to cause harm *Airstrike, military strike by air forces on either a suspected ...
. This type of fastball is intended to have minimal lateral movement, relying more on its velocity. It is often perceived as the fastest pitch a pitcher throws, with recorded top speeds above 100 mph. The fastest pitch recognized by
Major League Baseball 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), ...
(MLB) was on September 25, 2010, at Petco Park in San Diego by then-Cincinnati Reds left-handed relief pitcher
Aroldis Chapman Albertín Aroldis Chapman de la Cruz (; born February 28, 1988) is a Cuban-born American professional baseball relief pitcher who is a free agent. He has played in Major League Baseball (MLB) for the Cincinnati Reds, New York Yankees and Chica ...
. It was clocked at 105.1 miles per hour. April 19, 2011 Chapman lit up the stadium radar gun at 106 MPH (the TV-reading had his pitch at 105 MPH, and the pitchF/X reading was actually 102.4 MPH). Two general methods are used to throw a four-seam fastball. The first and most traditional way is to find the horseshoe seam area, or the area where the seams are the farthest apart. Keeping those seams parallel to the body, the pitcher places his index and middle fingers perpendicular to them with the pads on the farthest seam from him. The thumb then rests underneath the ball about in the middle of the two fingers. With this grip, the thumb will generally have no seam on which to rest. The four seam fastball is widely regarded as the main key to advancing to the next level of play. One of a baseball scout's main criteria when scouting a prospect is how fast he throws a four seam fastball. The game of baseball keeps on progressing, and as research on the physics of throwing is published and recognized, fastball velocity training has become more effective. This can be shown by looking at the average fastball velocity in the major leagues as time progresses. In 2008 the average fastball thrown in the MLB was 90.9 mph. 5 years later it had risen to 92.0. To show the effect that this increase in velocity has had on hitters in the big leagues, we can look at the runs scored stat. In 2008, the average number of runs a team scored a game was 4.6; 5 years later as the velocity increased, the average dropped by half a run a game, to 4.0. The pitch velocity has gone up so much mostly by the development of better training and clearer communication within the baseball community that velocity is so valued. People like Tom House, Eric Cressey, Kyle Boddy, and Ron Wolforth have all pushed the edge and dedicated careers to research on what makes the ultimate pitcher. Pitchers are getting bigger, faster and stronger, and pushing their bodies in the weight room as well as with weighted ball throwing. All of this has created a faster, more powerful game for pitchers on the mound today. Higher pitch velocities have resulted in fewer hits and other imbalances. A more distant pitcher's mound and other changes have been proposed to restore balance.


Two-seam fastball

A two-seam fastball, sometimes called a two-seamer, tailing fastball, running fastball, or sinker is another variant of the straight fastball. It is designed to have more movement than a four-seam fastball, so the batter cannot hit it hard, but it can be more difficult to master and control. Because of the deviation from the straight trajectory, the two-seam fastball is sometimes called a moving fastball. The pitcher grabs a baseball and finds the area on it where the seams are the closest together, and puts his index and middle fingers on each of those seams. A sinker is a similar pitch that drops 3 to 6 inches more than a typical two-seam fastball; this causes
batters Batter or batters may refer to: Common meanings * Batter (cooking), thin dough that can be easily poured into a pan * Batter (baseball), person whose turn it is to face the pitcher * Batter (cricket), a player who is currently batting * Batter ...
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 more often, mostly due to the tilted sidespin on the ball. Each finger should be touching the seam from the pads or tips to almost the ball of each finger. The thumb should rest underneath the ball in the middle of those two fingers, finding the apex of the horseshoe part of the seam. The thumb needs to rest on that seam from the side to the middle of its pad. If the middle finger is used, more whipping action occurs, making the pitch go around 10 mph faster. This ball tends to move for the pitcher a little bit depending on velocity, arm slot angle, and pressure points of the fingers. Retired pitchers
Greg Maddux Gregory Alan Maddux (born April 14, 1966) is an American former professional baseball pitcher who played 23 seasons in Major League Baseball (MLB) for four teams. Maddux is best known for his accomplishments while playing for the Atlanta Braves ...
and
Pedro Martínez Pedro Jaime Martínez (born October 25, 1971) is a Dominican-American former professional baseball starting pitcher, who played in Major League Baseball (MLB) from to , for five teams—most notably the Boston Red Sox from to . At the time o ...
were known for their effective two-seamers. Depending on the grip and pressure applied with the fingers, sometimes the two-seam fastball features more sink than lateral movement. Sinkerballers tend to induce a lot of ground ball outs because hitters tend to swing over the ball due to the late downward movement, thus often end up beating the ball into the ground. Roberto Hernández of 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 ...
,
Justin Masterson Justin Daniel Masterson (born March 22, 1985) is an Americans, American former professional baseball starting pitcher. Drafted by the Red Sox in the second round of the 2006 Major League Baseball draft, 2006 MLB draft from San Diego State Aztecs ...
of 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 hav ...
,
Derek Lowe Derek Christopher Lowe (born June 1, 1973) is an American former professional baseball pitcher. During his career, he played in Major League Baseball (MLB) for the Seattle Mariners, Boston Red Sox, Los Angeles Dodgers, Atlanta Braves, Cleveland I ...
of 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 ...
,
Tim Hudson Timothy Adam Hudson (born July 14, 1975), nicknamed "Huddy" is an American former professional baseball pitcher of Major League Baseball (MLB). After spending his college years at Chattahoochee Valley Community College and Auburn University, Hud ...
of the
San Francisco Giants The San Francisco Giants are an American professional baseball team based in San Francisco, California. The Giants compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. Founded in 1883 as the New Yor ...
,
Aaron Cook Aaron Cook may refer to: *Aaron Cook (baseball) (born 1979), Major League Baseball pitcher * Aaron Cook (footballer) (born 1979), Welsh footballer * Aaron Cook (politician), Nauruan politician *Aaron Cook (taekwondo) Aaron Arthur Cook (born 2 ...
of 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 ...
,
Clay Buchholz Clay Daniel Buchholz (born August 14, 1984) is an American former professional baseball pitcher. He played in Major League Baseball (MLB) for the Boston Red Sox, Philadelphia Phillies, Arizona Diamondbacks, and Toronto Blue Jays. Buchholz made h ...
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 ...
,
Roy Halladay Harry Leroy "Roy" Halladay III (May 14, 1977 – November 7, 2017) was an American professional baseball pitcher, who played in Major League Baseball (MLB) for the Toronto Blue Jays and Philadelphia Phillies between 1998 and 2013. His nicknam ...
of 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 ...
,
Chris Volstad Christopher Kenneth Volstad (born September 23, 1986) is an American former professional baseball pitcher. He is a 2005 graduate of Palm Beach Gardens High School. He has played in MLB for the Florida Marlins, Chicago Cubs, Colorado Rockies, Pit ...
of 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 ...
,
Trevor Cahill Trevor John Cahill (born March 1, 1988) is an American professional baseball pitcher who is currently a free agent. He has played in Major League Baseball (MLB) for the Oakland Athletics, Arizona Diamondbacks, Atlanta Braves, Chicago Cubs, Sa ...
of the
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
Bronson Arroyo Bronson Anthony Arroyo (born February 24, 1977) is an American former professional baseball pitcher and musician. He played in Major League Baseball (MLB) for the Pittsburgh Pirates between 2000 and 2002, the Boston Red Sox from 2003 to 2005, th ...
of 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 ...
are or were well known for their sinkers, consistently ranking high in the league in ground ball-to-fly ball ratio.


Rising fastball

The rising fastball is an effect perceived by some batters, but is a baseball myth. Some batters are under the impression that they have seen a "rising" fastball, which starts with the trajectory of a normal fastball, but which as it approaches the plate rises several inches and gains a burst of speed.
Tom Seaver George Thomas Seaver (November 17, 1944 – August 31, 2020), nicknamed "Tom Terrific" and "the Franchise", was an American professional baseball pitcher who played 20 seasons in Major League Baseball (MLB). He played for the New York Mets, Cinc ...
,
Jim Palmer James Alvin Palmer (born October 15, 1945) is an American former professional baseball pitcher who played 19 years in Major League Baseball (MLB) for the Baltimore Orioles (1965–1967, 1969–1984). Palmer was the winningest MLB pitcher in the ...
,
Sandy Koufax Sanford Koufax (; born Sanford Braun; December 30, 1935) is an American former left-handed pitcher in Major League Baseball (MLB) who played his entire career for the Brooklyn/Los Angeles Dodgers from 1955 to 1966. He has been hailed as one of t ...
,
Dwight Gooden Dwight Eugene Gooden (born November 16, 1964), nicknamed "Dr. K" and "Doc", is an American former professional baseball pitcher who played 16 seasons in Major League Baseball (MLB). Gooden pitched from 1984 to 1994 and from 1996 to 2000 for the N ...
,
Nolan Ryan Lynn Nolan Ryan Jr. (born January 31, 1947), nicknamed "the Ryan Express", is an American former professional baseball pitcher and sports executive. Over a record 27-year playing career in Major League Baseball (MLB) spanning four decades, Ryan ...
and
Chan Ho Park Chan Ho Park (; ; born June 30, 1973) is a South Korean former professional baseball pitcher. Park was the first South Korea-born player in MLB history. He played for the Los Angeles Dodgers, Texas Rangers, San Diego Padres, New York Mets, ...
have been described as paramount pitchers with this kind of ball action. Such a pitch is known to be beyond the physical capabilities of pitchers, due to the very high backspin required to overcome
gravity In physics, gravity () is a fundamental interaction which causes mutual attraction between all things with mass or energy. Gravity is, by far, the weakest of the four fundamental interactions, approximately 1038 times weaker than the stro ...
with the
Magnus effect The Magnus effect is an observable phenomenon commonly associated with a spinning object moving through a fluid. The path of the spinning object is deflected in a manner not present when the object is not spinning. The deflection can be expl ...
. While not physically impossible (conservation of momentum is maintained through imparting the required opposing momentum to air, as an airplane does at takeoff), the amount of spin required is beyond the capabilities of a human arm. It has been explained as an
optical illusion Within visual perception, an optical illusion (also called a visual illusion) is an illusion caused by the visual system and characterized by a visual perception, percept that arguably appears to differ from reality. Illusions come in a wide v ...
. What is likely happening is that the pitcher first throws a fastball at one speed, and then, using an identical arm motion, throws another fastball at a higher speed. The higher-speed fastball arrives faster and sinks less due to its high speed. The added back-spin from the higher speed further decreases the amount of sink. When the pitch is thrown, the batter expects a fastball at the same speed, yet it arrives more quickly and at a higher level. The batter perceives it as a fastball which has risen and increased in speed. A switch from a two-seam to a fastball can enhance this effect. This perception may also be created by a tall, hard-throwing pitcher who throws the ball from a higher release point on an elevated mound (the pitcher's rubber is 10 inches above the field level). Factoring in the element of
depth perception Depth perception is the ability to perceive distance to objects in the world using the visual system and visual perception. It is a major factor in perceiving the world in three dimensions. Depth perception happens primarily due to stereopsis an ...
when the hitter watches the pitcher from 60 ft 6 in away from the pitcher's mound, and the hitter perceives the pitcher's size and positioning on the mound to be less elevated than it actually is. Hence, to the hitter, an overhand pitch will appear to be thrown at a hitter's shoulder level (or even belt level), as opposed to several inches above the hitter's head, from where the pitch is actually released from the pitcher's hand. This perception enhances the apparent "rising" motion of the fastball when the pitch passes the hitter at a higher level than where the hitter perceived the pitch to have left the pitcher's hand. It is possible for a rising fastball to be thrown by a
submarine A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely op ...
pitcher because of the technique with which they throw the ball. Because they throw almost underhanded with their knuckles near the field surface, the batter perceives the sensation of the ball going upward because of its low starting point and flight trajectory. This is not the traditional rising fastball batters believe they see. This type of movement is similar to a rising fastball in fast-pitch softball. Left-hander
Sid Fernandez Charles Sidney Fernandez (born October 12, 1962) is an American former professional baseball left-handed pitcher who played in Major League Baseball (MLB) for the Los Angeles Dodgers, New York Mets, Baltimore Orioles, Philadelphia Phillies, and ...
was known for throwing a rising fastball from a slightly "submarine" motion.


Cutter

A cut fastball, or "cutter", is similar to a
slider Slider or Sliders may refer to: Arts * K.K. Slider, a fictional character within the ''Animal Crossing'' franchise * ''The Slider'', a 1972 album by T. Rex * Sliders (TV series), ''Sliders'' (TV series), an American science fiction and fantasy t ...
, but the pitcher tends to use a four-seam grip. The pitcher shifts the grip on a four-seamer (often by slightly rotating the thumb inwards and the two top fingers to the outside) to create more spin. This usually causes the pitch to shift inwards or outwards by a few inches, less than a typical slider, and often late. A cutter is effective for pitchers with a strong four-seamer since the grip and delivery look virtually identical. The unexpected motion will often fool batters into hitting the ball off-center, or missing it altogether.
Mariano Rivera Mariano Rivera (born November 29, 1969) is a Panamanian-American former professional baseball pitcher who played 19 seasons in Major League Baseball (MLB) for the New York Yankees, from 1995 to 2013. Nicknamed "Mo" and "Sandman", he spent most ...
, a now retired
reliever In baseball and softball, a relief pitcher or reliever is a pitcher who enters the game after the starting pitcher is removed because of fatigue, ineffectiveness, injury, or ejection, or for other strategic reasons, such as inclement weather d ...
for the New York Yankees, was known for throwing a cutter. In his prime, Rivera could deliver late motion while throwing the ball around 96 mph.
Al Leiter Alois Terry Leiter (; born October 23, 1965) is an American former professional baseball player and current television sports commentator. He played in Major League Baseball as a left-handed pitcher from to for the New York Yankees, Toronto Blu ...
rode his cutter to 162 career wins and a no-hitter.
Roy Halladay Harry Leroy "Roy" Halladay III (May 14, 1977 – November 7, 2017) was an American professional baseball pitcher, who played in Major League Baseball (MLB) for the Toronto Blue Jays and Philadelphia Phillies between 1998 and 2013. His nicknam ...
threw a cut fastball, but claimed that overusing it had given him forearm trouble. This may have prematurely ended Halladay's 2006 season due to forearm stiffness, since the grip causes more stress than a standard four-seamer. Yankee
Andy Pettitte Andrew Eugene Pettitte (; born June 15, 1972) is an American former professional baseball pitcher who played 18 seasons in Major League Baseball (MLB), primarily for the New York Yankees. He also pitched for the Houston Astros. Pettitte won fiv ...
is another pitcher who throws the cutter. On a June 3, 2007, game against the Red Sox, announcer
Joe Morgan Joe Leonard Morgan (September 19, 1943 – October 11, 2020) was an American professional baseball second baseman who played 22 seasons in Major League Baseball (MLB) for the Houston Colt .45s / Astros, Cincinnati Reds, San Francisco Giants, ...
estimated that of Pettitte's 87 pitches, 83 of them were cutters.
Jamie Moyer Jamie Moyer (born November 18, 1962) is an American former professional baseball pitcher. Over his 25-year career in Major League Baseball (MLB), Moyer pitched for the Chicago Cubs, Texas Rangers, St. Louis Cardinals, Baltimore Orioles, Boston R ...
used a cutter that became an important pitch due to his relatively low velocity late in his career. Many other major league pitchers have added the cut fastball, as well.


Split-finger fastball

The split-finger fastball, or "splitter", is truly an off-speed pitch rather than a type of fastball. Like the
changeup A changeup is a type of pitch in baseball and fastpitch softball. The changeup is a staple off-speed pitch often used in a pitcher's arsenal, usually thrown to look like a fastball but arriving much more slowly to the plate. Its reduced speed ...
, to which it is a close relative, it is thrown with the same arm motion as a normal fastball, but the adjusted grip causes it to behave quite differently. The ball does not have the characteristically tight spin of a fastball. The ball appears to tumble in a
knuckleball A knuckleball or knuckler is a baseball pitch thrown to minimize the spin of the ball in flight, causing an erratic, unpredictable motion. The air flow over a seam of the ball causes the ball to change from laminar to turbulent flow. This chan ...
-like fashion; but it is much faster than a knuckleball. The ball is gripped tightly with the index and middle fingers "split" along the outside of the horseshoe seam. It is important that at least one finger is touching the seam, as the ability to control the release of the ball is derived from this contact. The release is the same as a fastball. A splitter usually drops as it approaches the plate, and breaks to either the right or left. The
forkball The forkball is a type of pitch in baseball. Related to the split-finger fastball, the forkball is held between the first two fingers and thrown hard, snapping the wrist. The forkball differs from the split-fingered fastball, however, in tha ...
is a similar pitch, though it is slower and gripped with a more exaggerated split of the fingers. A pitcher generally needs long, flexible fingers to effectively throw this pitch. Due to similarities in speed and movement, some pitchers' split-finger fastballs are misidentified as changeups. It helps to have larger hands to throw this pitch. Because the fingers are spread wider than normal on the baseball, this pitch produces more stress from the hand up through the arm. While the mechanics are the same as a normal fastball, the stress it places on the hand and arm is different. Over time it is possible to damage the arm. It is therefore not recommended for younger pitchers to learn this pitch. Older pitchers should feel comfortable deploying this pitch, but to use it in moderation. The splitter is an effective pitch because the hitter generally picks up the movement later and either swings over the ball or produces a weakly hit ground ball. The split-finger is used currently by pitchers such as
Jonathan Papelbon Jonathan Robert Papelbon (; born November 23, 1980) is an American former professional baseball relief pitcher. He played 12 seasons in Major League Baseball (MLB), most notably for the Boston Red Sox, with whom he was an All-Star in four cons ...
, and
Masahiro Tanaka is a Japanese professional baseball player for the Tohoku Rakuten Golden Eagles of the Nippon Professional Baseball (NPB). From 2007 through 2013, he played for the Eagles in NPB. Tanaka was posted by the Eagles after the 2013 season to be si ...
. Former players noted for use of the split-finger fastball include
Bruce Sutter Howard Bruce Sutter (; January 8, 1953 – October 13, 2022) was an American professional baseball pitcher who played 12 seasons in Major League Baseball (MLB) between 1976 and 1988. He was one of the sport's dominant relievers in the late 1970 ...
, Mike Scott,
John Smoltz John Andrew Smoltz (born May 15, 1967), nicknamed "Smoltzie" and "Marmaduke", is an American former baseball pitcher who played 22 seasons in Major League Baseball from 1988 to 2009, all but the last year with the Atlanta Braves. An eight-time A ...
,
Jack Morris John Scott Morris (born May 16, 1955) is an American former professional baseball starting pitcher. He played in Major League Baseball (MLB) between 1977 and 1994, mainly for the Detroit Tigers. Morris won 254 games throughout his career. Armed ...
,
Kazuhiro Sasaki Kazuhiro "Daimajin" Sasaki (佐々木 主浩 ''Sasaki Kazuhiro'', born February 22, 1968) is a former Nippon Professional Baseball and Major League Baseball right-handed relief pitcher. He played his entire NPB career with the Yokohama Taiyo W ...
,
Bryan Harvey Bryan Stanley Harvey (born June 2, 1963) is an American former professional baseball relief pitcher. He played in Major League Baseball (MLB) from to for the California Angels of the American League and the Florida Marlins of the National Lea ...
,
Roger Clemens William Roger Clemens (born August 4, 1962), nicknamed "Rocket", is an American former professional baseball pitcher who played 24 seasons in Major League Baseball (MLB), primarily with the Boston Red Sox. Clemens was one of the most dominant pi ...
,
Dan Haren Daniel John Haren (born September 17, 1980) is an American former professional baseball pitcher. Haren played in Major League Baseball (MLB) for the St. Louis Cardinals, Oakland Athletics, Arizona Diamondbacks, Los Angeles Angels of Anaheim, Wa ...
, and
Fred Breining Fred Lawrence Breining (born November 15, 1955) is a former pitcher in Major League Baseball who played from 1980 through 1985 for the San Francisco Giants and the Montreal Expos. He had been traded along with Ed Whitson and Al Holland from the P ...
.


Incurve

The incurve was a term used until about 1930 used to describe a simple fastball. As a
curveball In baseball and softball, the curveball is a type of pitch thrown with a characteristic grip and hand movement that imparts forward spin to the ball, causing it to dive as it approaches the plate. Varieties of curveball include the 12–6 curve ...
was often called an "outcurve", one might assume that an incurve is the opposite of a curveball, in other words, the modern
screwball A screwball is a baseball and fastpitch softball pitch that is thrown so as to break in the opposite direction of a slider or curveball. Depending on the pitcher's arm angle, the ball may also have a sinking action. The pitch is sometimes known a ...
. However, this does not appear to be so, as cited by
John McGraw John Joseph McGraw (April 7, 1873 – February 25, 1934) was an American Major League Baseball (MLB) player and manager who was for almost thirty years manager of the New York Giants. He was also the third baseman of the pennant-winning 1890 ...
. :All balls that are twisted out of their natural course are called curves. The curveball, the drop, down shoot, and so on, are simply a curve ball to the professional player. To us there is no such thing as an incurve. That is what we call a fastball. Of course, I am assuming the pitcher is right-handed. A so-called incurve is nothing more than a ball thrown in a natural way with great force. A ball thus thrown will naturally curve inward, to a certain extent.


Side-arm fastball

A side-arm fastball is thrown from an angle different from the normal one. It is at a lower angle and is thrown from the side, hence the name "side"-arm. It will have a sinking motion to the right if the pitcher is right-handed, or to the left if the pitcher is left-handed. It is usually slower than a normal four-seam fastball.


References

{{Baseball Baseball pitches Baseball plays