Single-Season Top 10 Leaders

WAR for Pitchers †
1. Cy Young • 1901 12.5
2. Pedro Martinez • 2000 11.7
3. Lefty Grove • 1936 11.2
4. Roger Clemens • 1990 10.4
5. Smoky Joe Wood • 1912 10.2
6. Cy Young • 1902 10.1
7. Lefty Grove • 1937 9.8
Pedro Martinez • 1999 9.8
9. Dutch Leonard • 1914 9.5
10. Roger Clemens • 1987 9.4
Lefty Grove • 1935 9.4
Cy Young • 1908 9.4
Earned Run Average
1. Dutch Leonard • 1914 0.96
2. Cy Young • 1908 1.26
3. Smoky Joe Wood • 1915 1.49
4. Ray Collins • 1910 1.62
Cy Young • 1901 1.62
6. Ernie Shore • 1915 1.64
7. Smoky Joe Wood • 1910 1.69
8. Rube Foster • 1914 1.7
9. Pedro Martinez • 2000 1.74
Carl Mays • 1917 1.74
Wins
1. Smoky Joe Wood • 1912 34
2. Cy Young • 1901 33
3. Cy Young • 1902 32
4. Cy Young • 1903 28
5. Cy Young • 1904 26
6. Wes Ferrell • 1935 25
Dave Ferriss • 1946 25
Mel Parnell • 1949 25
9. Roger Clemens • 1986 24
Babe Ruth • 1917 24
Win-Loss %
1. Bob Stanley • 1978 .882
2. Smoky Joe Wood • 1912 .872
3. Roger Clemens • 1986 .857
Daisuke Matsuzaka • 2008 .857
5. Pedro Martinez • 1999 .852
6. Rick Porcello • 2016 .846
7. Pedro Martinez • 2002 .833
8. Roger Moret • 1975 .824
9. Dave Ferriss • 1946 .806
10. Ellis Kinder • 1949 .793
Walks & Hits per IP
1. Pedro Martinez • 2000 0.737
2. Cy Young • 1905 0.867
3. Dutch Leonard • 1914 0.886
4. Cy Young • 1908 0.893
5. Pedro Martinez • 1999 0.923
Pedro Martinez • 2002 0.923
7. Cy Young • 1904 0.937
8. Roger Clemens • 1986 0.969
Cy Young • 1903 0.969
10. Chris Sale • 2017 0.970
Hits per 9 IP
1. Pedro Martinez • 2000 5.309
2. Dutch Leonard • 1914 5.568
3. Roger Clemens • 1986 6.343
4. Dutch Leonard • 1915 6.382
5. Babe Ruth • 1916 6.395
6. Luis Tiant • 1972 6.436
7. Eddie Cicotte • 1909 6.487
8. Pedro Martinez • 2002 6.502
9. Roger Clemens • 1994 6.539
10. Tim Wakefield • 2002 6.667
Bases On Balls per 9 IP
1. Cy Young • 1904 0.687
2. Cy Young • 1906 0.782
3. Cy Young • 1905 0.842
4. Cy Young • 1901 0.897
5. Cy Young • 1903 0.975
6. David Wells • 2005 1.027
7. Jesse Tannehill • 1904 1.054
8. Cy Young • 1908 1.114
9. Curt Schilling • 2006 1.235
10. Cy Young • 1902 1.240
Strikeouts per 9 IP
1. Pedro Martinez • 1999 13.205
2. Chris Sale • 2017 12.933
3. Pedro Martinez • 2000 11.779
4. Pedro Martinez • 2002 10.791
5. Hideo Nomo • 2001 10.000
6. Jon Lester • 2009 9.959
7. Pedro Martinez • 2003 9.932
8. Roger Clemens • 1988 9.920
9. Jon Lester • 2010 9.736
10. Pedro Martinez • 1998 9.668
Games Played
1. Mike Timlin • 2005 81
2. Greg Harris • 1993 80
3. Dick Radatz • 1964 79
4. Mike Timlin • 2004 76
5. Heathcliff Slocumb • 1996 75
6. Derek Lowe • 1999 74
Derek Lowe • 2000 74
Rob Murphy • 1989 74
9. Daniel Bard • 2010 73
Manny Delcarmen • 2008 73
Tom Gordon • 1998 73
Joe Kelly • 2018 73
Koji Uehara • 2013 73
Brandon Workman • 2019 73
Saves
1. Tom Gordon • 1998 46
2. Craig Kimbrel • 2018 42
Derek Lowe • 2000 42
4. Jonathan Papelbon • 2008 41
5. Jeff Reardon • 1991 40
Ugueth Urbina • 2002 40
7. Jonathan Papelbon • 2009 38
8. Jonathan Papelbon • 2007 37
Jonathan Papelbon • 2010 37
10. Craig Kimbrel • 2017 35
Jonathan Papelbon • 2006 35
Innings Pitched
1. Cy Young • 1902 384.2
2. Cy Young • 1904 380.0
3. Bill Dinneen • 1902 371.1
Cy Young • 1901 371.1
5. Smoky Joe Wood • 1912 344.0
6. Cy Young • 1907 343.1
7. Cy Young • 1903 341.2
8. Bill Dinneen • 1904 335.2
9. Babe Ruth • 1917 326.1
10. Babe Ruth • 1916 323.2
Strikeouts
1. Pedro Martinez • 1999 313
2. Chris Sale • 2017 308
3. Roger Clemens • 1988 291
4. Pedro Martinez • 2000 284
5. Smoky Joe Wood • 1912 258
6. Roger Clemens • 1996 257
7. Roger Clemens • 1987 256
8. Pedro Martinez • 1998 251
9. Jim Lonborg • 1967 246
10. Roger Clemens • 1991 241
Games Started
1. Cy Young • 1902 43
2. Bill Dinneen • 1902 42
3. Cy Young • 1901 41
Cy Young • 1904 41
5. Babe Ruth • 1916 40
6. Howard Ehmke • 1923 39
Jim Lonborg • 1967 39
8. Wes Ferrell • 1935 38
Wes Ferrell • 1936 38
Sad Sam Jones • 1921 38
Babe Ruth • 1917 38
Luis Tiant • 1974 38
Luis Tiant • 1976 38
Smoky Joe Wood • 1912 38
Complete Games
1. Cy Young • 1902 41
2. Cy Young • 1904 40
3. Bill Dinneen • 1902 39
4. Cy Young • 1901 38
5. Bill Dinneen • 1904 37
6. Babe Ruth • 1917 35
Smoky Joe Wood • 1912 35
8. Cy Young • 1903 34
9. Cy Young • 1907 33
10. Bill Dinneen • 1903 32
Shutouts
1. Smoky Joe Wood • 1912 10
Cy Young • 1904 10
3. Babe Ruth • 1916 9
4. Roger Clemens • 1988 8
Carl Mays • 1918 8
6. Bullet Joe Bush • 1918 7
Roger Clemens • 1987 7
Dutch Leonard • 1914 7
Luis Tiant • 1974 7
Cy Young • 1903 7
Home Runs
1. Rick Porcello • 2017 38
Tim Wakefield • 1996 38
3. Earl Wilson • 1964 37
4. Josh Beckett • 2006 36
5. Bruce Hurst • 1987 35
Tim Wakefield • 2005 35
7. Kutter Crawford • 2024 34
Bill Monbouquette • 1964 34
Rick Wise • 1975 34
10. Gene Conley • 1961 33
Bases on Balls
1. Mel Parnell • 1949 134
2. Mickey McDermott • 1950 124
3. Don Schwall • 1962 121
Mike Torrez • 1979 121
5. Howard Ehmke • 1923 119
Wes Ferrell • 1936 119
Bobo Newsom • 1937 119
Jack Wilson • 1937 119
9. Red Ruffing • 1929 118
Babe Ruth • 1916 118
Hits
1. Cy Young • 1902 350
2. Bill Dinneen • 1902 348
3. Wes Ferrell • 1935 336
4. Wes Ferrell • 1936 330
5. Cy Young • 1904 327
6. Howard Ehmke • 1924 324
Cy Young • 1901 324
8. Bill Lee • 1974 320
9. Howard Ehmke • 1923 318
Sad Sam Jones • 1921 318
Strikeouts / Base On Balls
1. Pedro Martinez • 2000 8.875
2. Pedro Martinez • 1999 8.459
3. Chris Sale • 2017 7.163
4. Cy Young • 1905 7
5. Cy Young • 1904 6.897
6. Curt Schilling • 2006 6.536
7. Pedro Martinez • 2002 5.975
8. Rick Porcello • 2016 5.906
9. Curt Schilling • 2004 5.8
10. Cy Young • 1906 5.6
Home Runs per 9 IP
1. Sad Sam Jones • 1921 0.030
Cy Young • 1908 0.030
3. Carl Mays • 1917 0.031
4. Ray Collins • 1910 0.037
5. Ernie Shore • 1916 0.040
Ernie Shore • 1917 0.040
7. Ray Collins • 1911 0.046
8. Sad Sam Jones • 1918 0.049
9. Tex Pruiett • 1907 0.052
Smoky Joe Wood • 1912 0.052
Losses
1. Red Ruffing • 1928 25
2. Red Ruffing • 1929 22
3. Bill Dinneen • 1902 21
Joe Harris • 1906 21
Slim Harriss • 1927 21
Cy Young • 1906 21
7. Howard Ehmke • 1925 20
Milt Gaston • 1930 20
Sad Sam Jones • 1919 20
Jack Russell • 1930 20
Earned Runs
1. Wes Ferrell • 1936 140
2. Jack Russell • 1930 139
3. Tom Gordon • 1996 134
4. Howard Ehmke • 1923 133
Jack Russell • 1931 133
6. Red Ruffing • 1929 132
7. Wes Ferrell • 1935 126
Danny MacFayden • 1930 126
Mike Torrez • 1979 126
10. Red Ruffing • 1928 125
Wild Pitches
1. Earl Wilson • 1963 21
2. Milt Gaston • 1929 17
3. Gary Peters • 1970 16
4. Tim Wakefield • 2011 15
5. Eddie Cicotte • 1908 14
6. Matt Barnes • 2019 13
Matt Clement • 2005 13
8. Jim Lonborg • 1967 12
Rick Porcello • 2015 12
Diego Seguí • 1974 12
Frank Viola • 1992 12
Tim Wakefield • 2008 12
Hit By Pitch
1. Bronson Arroyo • 2004 20
Howard Ehmke • 1923 20
3. John Lackey • 2011 19
Jim Lonborg • 1967 19
5. Tim Wakefield • 2001 18
6. Matt Clement • 2005 16
Tanner Houck • 2024 16
Pedro Martinez • 2004 16
Rick Porcello • 2018 16
Tim Wakefield • 1997 16
Tim Wakefield • 2004 16
Batters Faced
1. Bill Dinneen • 1902 1508
2. Cy Young • 1902 1506
3. Cy Young • 1901 1440
4. Cy Young • 1904 1435
5. Wes Ferrell • 1935 1391
6. Howard Ehmke • 1923 1350
7. Howard Ehmke • 1924 1349
8. Wes Ferrell • 1936 1341
9. Smoky Joe Wood • 1912 1328
10. Cy Young • 1903 1314
Games Finished
1. Tom Gordon • 1998 69
2. Dick Radatz • 1964 67
3. Derek Lowe • 2000 64
4. Jonathan Papelbon • 2008 62
5. Keith Foulke • 2004 61
6. Bill Campbell • 1977 60
Heathcliff Slocumb • 1996 60
8. Jonathan Papelbon • 2009 59
9. Dick Radatz • 1963 58
10. Craig Kimbrel • 2018 57
Lee Smith • 1988 57
Adjusted ERA+
1. Pedro Martinez • 2000 291
2. Dutch Leonard • 1914 279
3. Pedro Martinez • 1999 243
4. Cy Young • 1901 219
5. Roger Clemens • 1990 211
Pedro Martinez • 2003 211
7. Pedro Martinez • 2002 202
8. Cy Young • 1908 195
9. Lefty Grove • 1936 189
10. Smoky Joe Wood • 1915 188
Fielding Independent Pitching
1. Pedro Martinez • 1999 1.39
2. Cy Young • 1908 1.52
3. Cy Young • 1905 1.69
4. Cy Young • 1904 1.83
5. Cy Young • 1906 1.87
6. Cy Young • 1907 1.94
7. Dutch Leonard • 1914 1.95
8. Ray Collins • 1910 1.99
9. Smoky Joe Wood • 1910 2.04
10. Smoky Joe Wood • 1909 2.12
Adj. Pitching Runs
1. Pedro Martinez • 2000 79
2. Cy Young • 1901 78
3. Lefty Grove • 1936 67
Pedro Martinez • 1999 67
5. Cy Young • 1902 58
6. Lefty Grove • 1935 54
Smoky Joe Wood • 1912 54
8. Mel Parnell • 1949 51
9. Roger Clemens • 1987 50
Roger Clemens • 1990 50
Lefty Grove • 1937 50
Adj. Pitching Wins
1. Pedro Martinez • 2000 8.4
2. Cy Young • 1901 7.8
3. Pedro Martinez • 1999 6.9
4. Lefty Grove • 1936 6.5
5. Cy Young • 1902 5.9
6. Smoky Joe Wood • 1912 5.8
7. Roger Clemens • 1990 5.7
8. Lefty Grove • 1935 5.4
9. Mel Parnell • 1949 5.3
10. Roger Clemens • 1986 5.2
Roger Clemens • 1987 5.2
Dutch Leonard • 1914 5.2
Base-Out Runs Saved (RE24) †
1. Pedro Martinez • 2000 86.93
2. Lefty Grove • 1936 76.14
3. Smoky Joe Wood • 1912 72.13
4. Pedro Martinez • 1999 72.02
5. Lefty Grove • 1937 60.58
6. Mel Parnell • 1949 56.55
7. Roger Clemens • 1990 56.42
8. Roger Clemens • 1987 55.50
Derek Lowe • 2002 55.50
10. Roger Clemens • 1986 55.19
Win Probability Added (WPA) †
1. Smoky Joe Wood • 1912 8.5
2. Pedro Martinez • 2000 8.1
3. Roger Clemens • 1990 7.1
4. Pedro Martinez • 1999 6.9
5. Lefty Grove • 1936 6.7
6. Lefty Grove • 1935 6.4
7. Lefty Grove • 1937 6.3
8. Dick Radatz • 1963 6.2
9. Roger Clemens • 1986 5.8
Tom Gordon • 1998 5.8
Luis Tiant • 1974 5.8
Sit. Wins Saved (WPA/LI) †
1. Pedro Martinez • 2000 8.5
2. Smoky Joe Wood • 1912 8.4
3. Pedro Martinez • 1999 6.7
4. Derek Lowe • 2002 5.7
5. Roger Clemens • 1986 5.3
Roger Clemens • 1991 5.3
7. Lefty Grove • 1936 5.2
8. Lefty Grove • 1935 5.0
Pedro Martinez • 2002 5.0
10. Roger Clemens • 1990 4.8
Pedro Martinez • 2003 4.8
Championship WPA (cWPA) †
1. Ellis Kinder • 1949 36.6
2. Ernie Shore • 1916 16.3
3. Smoky Joe Wood • 1912 15.4
4. Roger Clemens • 1990 15.3
5. Babe Ruth • 1917 14.8
Ernie Shore • 1915 14.8
7. Carl Mays • 1917 12.9
8. Sad Sam Jones • 1918 11.8
9. Babe Ruth • 1916 11.3
10. Dutch Leonard • 1917 10.8
Base-Out Wins Saved (REW) †
1. Pedro Martinez • 2000 9.2
2. Smoky Joe Wood • 1912 7.9
3. Pedro Martinez • 1999 7.4
4. Lefty Grove • 1936 7.2
5. Roger Clemens • 1990 6.3
6. Roger Clemens • 1986 6.0
Lefty Grove • 1937 6.0
8. Derek Lowe • 2002 5.8
Mel Parnell • 1949 5.8
10. Roger Clemens • 1987 5.7

Data Notes