Single-Season Top 10 Leaders

WAR for Pitchers †
1. Roger Clemens • 1997 11.9
2. Pat Hentgen • 1996 8.6
3. Roger Clemens • 1998 8.1
Roy Halladay • 2003 8.1
5. Dave Stieb • 1984 7.9
6. Dave Stieb • 1982 7.6
7. Jimmy Key • 1987 7.4
8. Mark Eichhorn • 1986 7.3
Roy Halladay • 2002 7.3
10. Dave Stieb • 1983 7.0
Earned Run Average
1. José Berríos • 2024 0.85
2. Roger Clemens • 1997 2.05
3. Alek Manoah • 2022 2.24
4. Yusei Kikuchi • 2024 2.28
5. Dave Stieb • 1985 2.48
6. Juan Guzmán • 1992 2.64
7. Roger Clemens • 1998 2.65
8. Hyun Jin Ryu • 2020 2.69
9. Jimmy Key • 1987 2.76
10. Roy Halladay • 2008 2.78
Wins
1. Roy Halladay • 2003 22
2. Roger Clemens • 1997 21
Jack Morris • 1992 21
4. Roger Clemens • 1998 20
Roy Halladay • 2008 20
J.A. Happ • 2016 20
Pat Hentgen • 1996 20
David Wells • 2000 20
9. Roy Halladay • 2002 19
Pat Hentgen • 1993 19
Win-Loss %
1. José Berríos • 2024 1.000
2. Aaron Sanchez • 2016 .882
3. J.A. Happ • 2016 .833
4. Juan Guzmán • 1993 .824
5. Jack Morris • 1992 .778
6. Roger Clemens • 1998 .769
7. Juan Guzmán • 1992 .762
Roy Halladay • 2006 .762
9. Roy Halladay • 2003 .759
10. Roger Clemens • 1997 .750
Roy Halladay • 2005 .750
Dave Stieb • 1990 .750
Walks & Hits per IP
1. Alek Manoah • 2022 0.992
2. José Berríos • 2024 1.011
3. Roger Clemens • 1997 1.030
4. Marco Estrada • 2015 1.044
5. Robbie Ray • 2021 1.045
6. Roy Halladay • 2008 1.053
7. Jimmy Key • 1987 1.057
8. Roy Halladay • 2003 1.071
9. Yusei Kikuchi • 2024 1.084
10. Roger Clemens • 1998 1.095
Hits per 9 IP
1. Roger Clemens • 1998 6.482
2. José Berríos • 2024 6.537
3. Alek Manoah • 2022 6.590
4. Marco Estrada • 2015 6.663
5. Juan Guzmán • 1992 6.725
6. Marco Estrada • 2016 6.750
7. Dave Stieb • 1988 6.815
8. Roger Clemens • 1997 6.955
9. Robbie Ray • 2021 6.983
10. Dave Stieb • 1985 6.996
Bases On Balls per 9 IP
1. Roy Halladay • 2003 1.083
2. Jimmy Key • 1989 1.125
3. David Wells • 2000 1.215
4. Josh Towers • 2005 1.251
5. Roy Halladay • 2009 1.318
6. Roy Halladay • 2006 1.391
7. Roy Halladay • 2008 1.427
8. Kevin Gausman • 2022 1.443
9. Mark Buehrle • 2015 1.495
10. Jimmy Key • 1991 1.892
Strikeouts per 9 IP
1. Robbie Ray • 2021 11.545
2. Kevin Gausman • 2023 11.530
3. Yusei Kikuchi • 2024 10.735
4. Kevin Gausman • 2022 10.563
5. Roger Clemens • 1998 10.393
6. Brandon Morrow • 2011 10.188
7. Roger Clemens • 1997 9.955
8. Yusei Kikuchi • 2023 9.716
9. Hyun Jin Ryu • 2020 9.672
10. A.J. Burnett • 2007 9.561
Games Played
1. Mark Eichhorn • 1987 89
2. Paul Quantrill • 1998 82
3. Scott Downs • 2007 81
Duane Ward • 1991 81
5. Paul Quantrill • 2001 80
Scott Schoeneweis • 2005 80
7. Trever Miller • 2003 79
Duane Ward • 1992 79
9. Dan Plesac • 1998 78
10. Adam Cimber • 2022 77
Paul Quantrill • 1997 77
Saves
1. Duane Ward • 1993 45
2. Roberto Osuna • 2017 39
3. Kelvim Escobar • 2002 38
B.J. Ryan • 2006 38
5. Kevin Gregg • 2010 37
6. Billy Koch • 2001 36
Roberto Osuna • 2016 36
Jordan Romano • 2022 36
Jordan Romano • 2023 36
10. Tom Henke • 1987 34
Tom Henke • 1992 34
Casey Janssen • 2013 34
Innings Pitched
1. Dave Stieb • 1982 288.1
2. Dave Stieb • 1983 278.0
3. Dave Stieb • 1984 267.0
4. Jim Clancy • 1982 266.2
5. Roy Halladay • 2003 266.0
6. Pat Hentgen • 1996 265.2
7. Dave Stieb • 1985 265.0
8. Roger Clemens • 1997 264.0
Pat Hentgen • 1997 264.0
10. Doyle Alexander • 1984 261.2
Strikeouts
1. Roger Clemens • 1997 292
2. Roger Clemens • 1998 271
3. Robbie Ray • 2021 248
4. Kevin Gausman • 2023 237
5. A.J. Burnett • 2008 231
6. Roy Halladay • 2009 208
7. Roy Halladay • 2008 206
8. Kevin Gausman • 2022 205
9. Roy Halladay • 2003 204
10. Brandon Morrow • 2011 203
Games Started
1. Jim Clancy • 1982 40
2. Luis Leal • 1982 38
Dave Stieb • 1982 38
4. Jim Clancy • 1987 37
5. Doyle Alexander • 1985 36
Jim Clancy • 1984 36
Roy Halladay • 2003 36
Jimmy Key • 1987 36
Dave Stieb • 1983 36
Dave Stieb • 1985 36
Complete Games
1. Dave Stieb • 1982 19
2. Jim Clancy • 1980 15
3. Dave Stieb • 1980 14
Dave Stieb • 1983 14
5. Jerry Garvin • 1977 12
Tom Underwood • 1979 12
7. Doyle Alexander • 1984 11
Jim Clancy • 1982 11
Jim Clancy • 1983 11
Dave Lemanczyk • 1977 11
Dave Lemanczyk • 1979 11
Dave Stieb • 1981 11
Dave Stieb • 1984 11
Home Runs
1. Woody Williams • 1998 36
2. R.A. Dickey • 2013 35
3. Jerry Garvin • 1977 33
Robbie Ray • 2021 33
5. Pat Hentgen • 1999 32
David Wells • 1999 32
7. Marco Estrada • 2017 31
Pat Hentgen • 1997 31
Woody Williams • 1997 31
10. Chris Carpenter • 2000 30
John Cerutti • 1987 30
Bases on Balls
1. Jim Clancy • 1980 128
2. Juan Guzmán • 1993 110
3. Al Leiter • 1995 108
4. Ricky Romero • 2012 105
5. Erik Hanson • 1996 102
6. Miguel Batista • 2004 96
Dave Stieb • 1985 96
8. Tom Underwood • 1979 95
9. Pat Hentgen • 1996 94
10. Dave Stieb • 1983 93
Hits
1. Dave Lemanczyk • 1977 278
2. Dave Stieb • 1982 271
3. Doyle Alexander • 1985 268
4. David Wells • 2000 266
5. Roy Halladay • 2003 253
Pat Hentgen • 1997 253
7. Jim Clancy • 1982 251
8. Luis Leal • 1982 250
9. Jim Clancy • 1984 249
10. Jerry Garvin • 1977 247
Strikeouts / Base On Balls
1. Kevin Gausman • 2022 7.321
2. Roy Halladay • 2003 6.375
3. Roy Halladay • 2009 5.943
4. David Wells • 2000 5.355
5. Roy Halladay • 2008 5.282
6. Robbie Ray • 2021 4.769
7. Jimmy Key • 1989 4.37
8. Kevin Gausman • 2023 4.309
9. Roger Clemens • 1997 4.294
10. Hyun Jin Ryu • 2020 4.235
Home Runs per 9 IP
1. Juan Guzmán • 1992 0.299
2. Roger Clemens • 1997 0.307
3. Roy Halladay • 2002 0.376
4. Roger Clemens • 1998 0.422
5. Dave Stieb • 1980 0.445
6. Jim Clancy • 1978 0.465
7. Dave Stieb • 1990 0.474
8. Dave Stieb • 1981 0.490
9. Jimmy Key • 1991 0.516
10. Dave Stieb • 1989 0.523
Losses
1. Jerry Garvin • 1977 18
Phil Huffman • 1979 18
3. Erik Hanson • 1996 17
Jesse Jefferson • 1977 17
Todd Stottlemyre • 1990 17
6. Jim Clancy • 1980 16
Jesse Jefferson • 1978 16
Dave Lemanczyk • 1977 16
Tom Underwood • 1979 16
10. Jim Clancy • 1984 15
R.A. Dickey • 2016 15
Kelvim Escobar • 2000 15
Luis Leal • 1982 15
Cory Lidle • 2003 15
Dave Stieb • 1980 15
Earned Runs
1. Erik Hanson • 1996 129
2. Jim Clancy • 1984 125
3. David Wells • 1999 124
4. Cory Lidle • 2003 123
5. Chris Carpenter • 2000 122
6. Dave Lemanczyk • 1977 119
7. Ricky Romero • 2012 116
8. Jerry Garvin • 1977 114
Pat Hentgen • 1995 114
10. Phil Huffman • 1979 111
Wild Pitches
1. Juan Guzmán • 1993 26
2. Dave Lemanczyk • 1977 20
3. Ricky Romero • 2010 18
4. Juan Guzmán • 1992 14
Al Leiter • 1995 14
Jack Morris • 1993 14
7. Juan Guzmán • 1994 13
Erik Hanson • 1996 13
Dustin McGowan • 2007 13
Duane Ward • 1989 13
Hit By Pitch
1. Chris Carpenter • 2001 16
Alek Manoah • 2021 16
3. Alek Manoah • 2022 15
Dave Stieb • 1986 15
5. R.A. Dickey • 2014 14
Ricky Romero • 2011 14
Dave Stieb • 1983 14
8. Dave Bush • 2005 13
Dave Stieb • 1988 13
Dave Stieb • 1989 13
Batters Faced
1. Dave Stieb • 1982 1187
2. Dave Stieb • 1983 1141
3. Jim Clancy • 1982 1100
Pat Hentgen • 1996 1100
5. Dave Lemanczyk • 1977 1092
6. Doyle Alexander • 1985 1090
7. Dave Stieb • 1985 1087
8. Pat Hentgen • 1997 1085
Dave Stieb • 1984 1085
10. Jim Clancy • 1980 1075
Games Finished
1. Duane Ward • 1993 70
2. Kelvim Escobar • 2002 68
3. Miguel Batista • 2005 62
Tom Henke • 1987 62
Billy Koch • 2000 62
6. Roberto Osuna • 2016 61
7. Tom Henke • 1990 58
Roberto Osuna • 2017 58
9. B.J. Ryan • 2006 57
10. Kevin Gregg • 2010 56
Tom Henke • 1989 56
Billy Koch • 2001 56
Mike Timlin • 1996 56
Adjusted ERA+
1. José Berríos • 2024 446
2. Roger Clemens • 1997 222
3. Roger Clemens • 1998 174
4. Alek Manoah • 2022 172
5. Juan Guzmán • 1996 171
Dave Stieb • 1985 171
7. Yusei Kikuchi • 2024 167
8. Jimmy Key • 1987 164
Hyun Jin Ryu • 2020 164
10. Roy Halladay • 2009 159
Fielding Independent Pitching
1. Roger Clemens • 1997 2.25
2. Kevin Gausman • 2022 2.38
3. Yusei Kikuchi • 2024 2.58
4. Juan Guzmán • 1992 2.60
5. Roger Clemens • 1998 2.65
6. Kevin Gausman • 2023 2.97
Roy Halladay • 2002 2.97
8. Hyun Jin Ryu • 2020 3.01
9. Roy Halladay • 2008 3.03
10. Roy Halladay • 2009 3.06
Adj. Pitching Runs
1. Roger Clemens • 1997 74
2. Pat Hentgen • 1996 52
3. Roger Clemens • 1998 50
4. Jimmy Key • 1987 49
5. Dave Stieb • 1985 47
6. Mark Eichhorn • 1986 44
7. Juan Guzmán • 1996 43
Roy Halladay • 2009 43
9. Dave Stieb • 1984 40
10. Roy Halladay • 2002 39
Roy Halladay • 2003 39
Adj. Pitching Wins
1. Roger Clemens • 1997 7.9
2. Roger Clemens • 1998 5.2
3. Pat Hentgen • 1996 5.1
4. Jimmy Key • 1987 5.0
Dave Stieb • 1985 5.0
6. Mark Eichhorn • 1986 4.5
Roy Halladay • 2009 4.5
8. Dave Stieb • 1984 4.3
9. Juan Guzmán • 1996 4.2
10. Roy Halladay • 2002 4.1
Base-Out Runs Saved (RE24) †
1. Roger Clemens • 1997 80.62
2. Pat Hentgen • 1996 52.98
3. Roger Clemens • 1998 52.09
4. Dave Stieb • 1985 51.04
5. Mark Eichhorn • 1986 50.51
6. Jimmy Key • 1987 50.34
7. Dave Stieb • 1984 48.45
8. Roy Halladay • 2009 47.52
9. Juan Guzmán • 1996 44.34
10. Roy Halladay • 2008 41.82
Win Probability Added (WPA) †
1. Roger Clemens • 1997 7.1
2. Mark Eichhorn • 1986 5.0
3. Pat Hentgen • 1996 4.8
4. B.J. Ryan • 2006 4.7
5. Juan Guzmán • 1992 4.6
Roy Halladay • 2005 4.6
7. Roger Clemens • 1998 4.4
Roy Halladay • 2003 4.4
Roy Halladay • 2008 4.4
10. Jimmy Key • 1985 4.3
Sit. Wins Saved (WPA/LI) †
1. Roger Clemens • 1997 7.2
2. Roger Clemens • 1998 5.2
3. Roy Halladay • 2008 4.9
4. Jimmy Key • 1987 4.7
5. Mark Eichhorn • 1986 4.5
6. Dave Stieb • 1984 4.1
7. Roy Halladay • 2009 4.0
8. Pat Hentgen • 1996 3.9
Dave Stieb • 1985 3.9
10. Roy Halladay • 2002 3.8
Roy Halladay • 2003 3.8
Championship WPA (cWPA) †
1. Mike Flanagan • 1987 10.8
2. Jimmy Key • 1987 9.1
3. Jimmy Key • 1985 7.5
4. Dave Stieb • 1985 6.7
5. Juan Guzmán • 1992 6.6
6. Jim Acker • 1989 6.5
7. David Wells • 1987 6.1
8. Duane Ward • 1992 6.0
9. Tom Henke • 1989 5.5
10. Tom Henke • 1992 5.2
Base-Out Wins Saved (REW) †
1. Roger Clemens • 1997 8.8
2. Roger Clemens • 1998 5.4
Dave Stieb • 1985 5.4
4. Pat Hentgen • 1996 5.2
Dave Stieb • 1984 5.2
6. Mark Eichhorn • 1986 5.1
Jimmy Key • 1987 5.1
8. Roy Halladay • 2009 5.0
9. Roy Halladay • 2008 4.5
10. Juan Guzmán • 1996 4.4

Data Notes