Single Season Team Pitching Records
Wins: 1906 Chicago Cubs; 2001 Seattle Mariners – 116
Losses: 1899 Cleveland Spiders – 134
Losses (modern era): 1962 New York Mets – 120
Innings pitched: 1964 New York Yankees – 1506⅔
Complete games: 1904 Boston Americans – 148
Shutouts: 1906 Chicago White Sox; 1906 Chicago Cubs – 32
Saves: 1990 Chicago White Sox – 68
Strikeouts: 2018 Houston Astros – 1,687
Batters faced: 1996 Detroit Tigers – 6,713
Pickoffs: 1914 Chicago White Sox – 40
Caught stealing: 1914 Pittsburgh Pirates – 158
Double plays: 2005 St. Louis Cardinals – 181
Quality starts: 1904 Boston Americans – 125
Total pitches (since 1988): 2019 Boston Red Sox – 26,144
Strikes (since 2000): 2019 Boston Red Sox – 16,483
Strike percentage (since 2000): 2022 Tampa Bay Rays – 66.34%
Earned run average: 1907 Chicago Cubs – 1.73
Earned run average (live-ball era): 1967 Chicago White Sox – 2.45
Walks and hits per inning pitched: 1888 St. Louis Browns – 0.960
Walks and hits per inning pitched (modern era): 1908 Chicago White Sox – 1.025
Walks and hits per inning pitched (live-ball era): 2022 Los Angeles Dodgers – 1.048
Hits per 9 innings: 1906 Chicago Cubs – 6.6
Hits per 9 innings (live-ball era): 1968 Cleveland – 6.7
Home runs per 9 innings (live-ball era): 1920 Brooklyn Robins – 0.2
Walks per 9 innings: 1884 Louisville Eclipse – 0.9
Walks per 9 innings (modern era): 1904 Boston Americans – 1.5
Walks per 9 innings (live-ball era): 1920 Pittsburgh Pirates – 1.8
Strikeouts per 9 innings: 2018 Houston Astros – 10.4
Strikeouts per walk: 1884 Boston Reds – 6.85
Strikeouts per walk (modern era): 2017 Cleveland – 3.98
Strikeout percentage: 2018 Houston Astros – 28.5%
Walk percentage: 1884 Cincinnati Outlaw Reds – 2.4%
Walk percentage (modern era): 1904 Boston Americans – 4.3%
Walk percentage (live-ball era): 1933 Cincinnati Reds – 4.5%
ERA+: 1884 Providence Grays – 177
ERA+ (modern era): 1906 Chicago Cubs – 151
ERA+ (live-ball era): 2022 Los Angeles Dodgers – 148
Batting average against: 1968 Cleveland – .206
On-base percentage against: 2022 Los Angeles Dodgers – .273
Slugging percentage against: 1915 Washington Senators – .275
Slugging percentage against (live-ball era): 1942 St. Louis Cardinals – .292
On-base plus slugging against: 1914 Chicago Chi-Feds – .571
On-base plus slugging against (live-ball era) 1942 St. Louis Cardinals – .586
Isolated power against: 1916 St. Louis Browns – .036
Isolated power against (live-ball era): 1942 St. Louis Browns – .064
BABIP against: 1968 Cleveland – .244
OPS+ against: 2021 Los Angeles Dodgers; 2022 Los Angeles Dodgers – 70
Wins above replacement: 2011 Philadelphia Phillies – 36.5
Win probability added: 1969 New York Mets – 22.8
Hits: 1930 Philadelphia Phillies – 1,993
Runs: 1899 Cleveland Spiders – 1,252
Runs (modern era): 1930 Philadelphia Phillies – 1,199
Earned runs: 1930 Philadelphia Phillies – 1,024
Home runs: 2019 Baltimore Orioles – 305
Walks: 1915 Philadelphia Athletics – 827
Intentional walks: 1974 San Diego Padres – 116
Hit by pitch: 2022 Cincinnati Reds – 110
Singles: 1930 Philadelphia Phillies – 1,411
Doubles: 2001 Texas Rangers – 391
Triples: 1924 Boston Braves – 120
Total bases: 1930 Philadelphia Phillies – 2,936
Wild pitches: 1889 Columbus Solons – 144
Wild pitches (modern era): 2019 Los Angeles Angels; 2016 Houston Astros – 98
Balks: 1988 Oakland Athletics – 76
Stolen bases: 2001 Boston Red Sox – 223
Blown saves: 2021 Washington Nationals – 37
Inherited runners: 1996 Detroit Tigers – 396
Inherited runners scored: 1996 Detroit Tigers – 153
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