In baseball, innings pitched (IP) are the number of innings a pitcher has completed, measured by the number of batters and baserunners that are put out while the pitcher is on the pitching mound in a game. Three outs made is equal to one inning pitched. One out counts as one-third of an inning, and two outs count as two-thirds of an inning.
This is a list of the top 100 Major League Baseball pitchers who have accumulated the most innings pitched of all time.
Cy Young is the all-time leader in innings pitched with 7,356, and the only pitcher to throw more than 7,000 innings. Pud Gavin is the only other pitcher in MLB history to throw more than 6,000 innings.
Rank | Rank amongst leaders in career innings pitched. A blank field indicates a tie. |
Player | Name of Player |
IP | Total career innings pitched. Current total in parentheses () |
* | Denotes elected to National Baseball Hall of Fame. |
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Denotes active player | |
Lynn Nolan Ryan Jr., 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), Ryan pitched for the New York Mets, California Angels, Houston Astros, and Texas Rangers. After his retirement in 1993, Ryan served as chief executive officer (CEO) of the Texas Rangers and an executive advisor to the Houston Astros. He was inducted into the Baseball Hall of Fame in 1999, and is widely considered to be one of the greatest MLB pitchers of all time.
Sanford Koufax, nicknamed "the Left Arm of God", is an American former baseball pitcher who played 12 seasons in Major League Baseball (MLB) for the Brooklyn/Los Angeles Dodgers from 1955 to 1966. Widely regarded as one of the greatest pitchers in baseball history, Koufax was the first three-time winner of the Cy Young Award, each time winning unanimously and the only pitcher to do so when a single award was given for both the leagues; he was also named the National League Most Valuable Player in 1963. Retiring at the age of 30 due to chronic pain in his pitching elbow, Koufax was elected to the Baseball Hall of Fame in his first year of eligibility in 1972 at the age of 36, the youngest player ever elected.
Gregory Alan Maddux, also known as "Mad Dog" and "the Professor," is an American former professional baseball pitcher who played 23 seasons in Major League Baseball (MLB), primarily with the Atlanta Braves and Chicago Cubs. He won the 1995 World Series with the Braves over the Cleveland Indians. Maddux was the first pitcher in MLB history to win the Cy Young Award four consecutive years (1992–1995), matched by only one other pitcher, Randy Johnson. During those four seasons, Maddux had a 75–29 record with a 1.98 earned run average (ERA), while allowing less than one baserunner per inning.
In baseball or softball, a strikeout occurs when a batter accumulates three strikes during a time at bat. It means the batter is out, unless the third strike is not caught by the catcher and the batter reaches first base safely as a result. A strikeout is a statistic recorded for both pitchers and batters, and is usually denoted by the letter K, or sometimes by the initialism SO. A "strikeout looking"—in which the batter does not swing and the third strike is called by the umpire—may be denoted by an inverted K.
In baseball, the statistic innings pitched (IP) is the number of innings a pitcher has completed, measured by the number of batters and baserunners that have been put out while the pitcher is on the pitching mound in a game. Three outs made is equal to one inning pitched. One out counts as one-third of an inning, and two outs as two-thirds of an inning. Sometimes, the statistic is written 34.1, 72.2, or 91.0, for example, to represent 34+1⁄3 innings, 72+2⁄3 innings, and 91 innings exactly, respectively.
In baseball and softball, a win–loss record is a statistic that indicates the number of wins and losses credited to a pitcher. For example, a 20–10 win–loss record would represent 20 wins and 10 losses.
In baseball, a no-hitter or no-hit game is a game in which a team does not record a hit through conventional methods. Major League Baseball (MLB) officially defines a no-hitter as a completed game in which a team that batted in at least nine complete innings recorded no hits. A pitcher who prevents the opposing team from achieving a hit is thereby said to have "thrown a no-hitter". In most cases, no-hitters are recorded by a single pitcher who throws a complete game; one thrown by two or more pitchers is a combined no-hitter.
Randall David Johnson, nicknamed "the Big Unit", is an American former professional baseball pitcher who played 22 seasons in Major League Baseball (1988–2009) for six teams, primarily the Seattle Mariners and Arizona Diamondbacks.
In baseball and softball, a relief pitcher or reliever is a pitcher who pitches in the game after the starting pitcher or another relief pitcher has been removed from the game due to fatigue, injury, ineffectiveness, ejection, high pitch count, or for other strategic reasons, such as inclement weather delays or pinch hitter substitutions. Relief pitchers are further divided informally into various roles, such as closers, setup men, middle relief pitchers, left/right-handed specialists, and long relievers. Whereas starting pitchers usually throw so many pitches in a single game that they must rest several days before pitching in another, relief pitchers are expected to be more flexible and typically pitch in more games with a shorter time period between pitching appearances but with fewer innings pitched per appearance. A team's staff of relievers is normally referred to metonymically as a team's bullpen, which refers to the area where the relievers sit during games, and where they warm-up prior to entering the game.
John Gibson Clarkson was an American Major League Baseball right-handed pitcher. He played from 1882 to 1894. Born in Cambridge, Massachusetts, Clarkson played for the Worcester Ruby Legs (1882), Chicago White Stockings (1884–1887), Boston Beaneaters (1888–1892), and Cleveland Spiders (1892–1894). Clarkson pitched the first known immaculate inning in MLB history on June 4, 1889 vs the Philadelphia Quakers in the 3rd inning.
Juan Antonio Marichal Sánchez, nicknamed "the Dominican Dandy", is a Dominican former right-handed pitcher who played 16 seasons in Major League Baseball from 1960 to 1975, mostly with the San Francisco Giants. Known for his high leg kick, variety of pitches, arm angles and deliveries, pinpoint control, and durability, Marichal won 18 games to help the Giants reach the 1962 World Series, and went on to earn 191 victories in the 1960s, the most of any major league pitcher. He won over 20 games six times, on each occasion posting an earned run average (ERA) below 2.50 and striking out more than 200 batters, and became the first right-hander since Bob Feller to win 25 games three times; his 26 wins in 1968 remain a franchise record.
Throughout baseball's history, the rules have frequently changed as the game continues to evolve. A few common rules most professional leagues have in common are that four balls are a base on balls, three strikes are a strikeout, and three outs end a half-inning.
Mark Alan Buehrle is an American former professional baseball pitcher. He played the majority of his Major League Baseball (MLB) career with the Chicago White Sox, playing twelve seasons for the team and winning the World Series with them in 2005. Buehrle also pitched for the Miami Marlins and Toronto Blue Jays.
Justin Brooks Verlander is an American professional baseball pitcher for the Houston Astros of Major League Baseball (MLB). He has previously played in MLB for the Detroit Tigers and New York Mets. A three-time Cy Young Award winner as well as an AL MVP recipient, Verlander is considered one of the greatest pitchers in baseball history.
Matthew Aloysius "Matches" Kilroy was an American left-handed pitcher in Major League Baseball. During his rookie season in 1886, he had 513 strikeouts, which remains the MLB single-season record.
George Leroy "Hooks" Wiltse was an American professional baseball pitcher. He played 12 seasons in Major League Baseball (MLB) from 1904 to 1915. He was the younger brother of pitcher Snake Wiltse.
Maxwell Martin Scherzer, nicknamed "Mad Max", is an American professional baseball pitcher for the Texas Rangers of Major League Baseball (MLB). He has previously played in MLB for the Arizona Diamondbacks, Detroit Tigers, Washington Nationals, Los Angeles Dodgers, and New York Mets. A right-handed starting pitcher, Scherzer is an eight-time MLB All-Star, has won three Cy Young Awards, has pitched two no-hitters, and won the World Series with the Nationals in 2019, and the Texas Rangers in 2023. Scherzer is considered to be one of the greatest pitchers of his generation and of all time.
In Major League Baseball, a shutout refers to the act by which a single pitcher pitches a complete game and does not allow the opposing team to score a run. If two or more pitchers combine to complete this act, no pitcher is awarded a shutout, although the team itself can be said to have "shut out" the opposing team.