Single-Season Top 10 Leaders

WAR for Pitchers †
1. Randy Johnson1995 8.6
2. Randy Johnson1997 8.0
3. Félix Hernández2010 7.2
4. Hisashi Iwakuma2013 7.0
5. Randy Johnson1993 6.6
6. Jamie Moyer1999 6.5
7. Félix Hernández2014 6.4
8. Mike Moore1985 6.3
9. Félix Hernández2009 5.9
Mark Langston1987 5.9
Earned Run Average
1. Félix Hernández2014 2.14
2. Félix Hernández2010 2.27
3. Randy Johnson1997 2.28
4. Randy Johnson1995 2.48
5. Félix Hernández2009 2.49
6. Hisashi Iwakuma2013 2.66
7. Félix Hernández2013 3.04
8. Freddy García2001 3.05
9. Félix Hernández2012 3.06
10. Marco Gonzales2020 3.1
Wins
1. Jamie Moyer2003 21
2. Randy Johnson1997 20
Jamie Moyer2001 20
4. Félix Hernández2009 19
Randy Johnson1993 19
Mark Langston1987 19
7. Freddy García2001 18
Erik Hanson1990 18
Félix Hernández2015 18
Randy Johnson1995 18
Win-Loss %
1. Randy Johnson1995 .900
2. Randy Johnson1997 .833
3. Paul Abbott2001 .810
4. Félix Hernández2009 .792
5. Marco Gonzales2020 .778
6. Jamie Moyer1997 .773
7. Jamie Moyer2001 .769
8. Freddy García2001 .750
Jamie Moyer2003 .750
Aaron Sele2001 .750
Walks & Hits per IP
1. Félix Hernández2014 0.915
2. Marco Gonzales2020 0.947
3. Hisashi Iwakuma2013 1.006
4. George Kirby2023 1.038
5. Randy Johnson1995 1.045
6. Hisashi Iwakuma2014 1.050
7. Randy Johnson1997 1.052
8. Félix Hernández2010 1.057
9. Logan Gilbert2023 1.075
Jamie Moyer2002 1.075
Hits per 9 IP
1. Randy Johnson1997 6.211
2. Félix Hernández2014 6.483
3. Randy Johnson1993 6.521
4. Randy Johnson1992 6.590
5. Randy Johnson1995 6.677
6. Randy Johnson1991 6.750
7. Randy Johnson1994 6.907
8. Félix Hernández2010 6.993
9. Michael Pineda2011 7.000
10. Randy Johnson1990 7.129
Bases On Balls per 9 IP
1. George Kirby2023 0.897
2. Marco Gonzales2020 0.904
3. Hisashi Iwakuma2014 1.056
4. Jamie Moyer1998 1.613
5. Mike Leake2018 1.648
6. Doug Fister2010 1.684
7. Logan Gilbert2023 1.699
8. Hisashi Iwakuma2013 1.721
9. Marco Gonzales2018 1.728
10. Félix Hernández2014 1.754
Strikeouts per 9 IP
1. Randy Johnson1995 12.345
2. Randy Johnson1997 12.296
3. Randy Johnson1993 10.856
4. Randy Johnson1994 10.674
5. Randy Johnson1992 10.312
6. Randy Johnson1991 10.192
7. Robbie Ray2022 10.095
8. Luis Castillo2023 10.005
9. Félix Hernández2013 9.514
10. Félix Hernández2014 9.458
Games Played
1. Matt Brash2023 78
Ed Vande Berg1982 78
3. Ed Vande Berg1985 76
4. Mark Lowe2009 75
Justin Topa2023 75
6. David Aardsma2009 73
Edwin Díaz2018 73
Michael Jackson1996 73
George Sherrill2007 73
Tom Wilhelmsen2012 73
Saves
1. Edwin Díaz2018 57
2. Fernando Rodney2014 48
3. Kazuhiro Sasaki2001 45
4. J.J. Putz2007 40
5. David Aardsma2009 38
6. Brandon League2011 37
Kazuhiro Sasaki2000 37
Kazuhiro Sasaki2002 37
9. Eddie Guardado2005 36
J.J. Putz2006 36
Innings Pitched
1. Mark Langston1987 272.0
2. Mike Moore1986 266.0
3. Mark Langston1988 261.1
4. Randy Johnson1993 255.1
5. Félix Hernández2010 249.2
6. Floyd Bannister1982 247.0
Mike Moore1985 247.0
8. Mark Langston1986 239.1
9. Freddy García2001 238.2
Félix Hernández2009 238.2
Strikeouts
1. Randy Johnson1993 308
2. Randy Johnson1995 294
3. Randy Johnson1997 291
4. Mark Langston1987 262
5. Félix Hernández2014 248
6. Mark Langston1986 245
7. Randy Johnson1992 241
8. Mark Langston1988 235
9. Félix Hernández2010 232
10. Randy Johnson1991 228
Complete Games
1. Mark Langston1987 14
Mike Moore1985 14
3. Mike Parrott1979 13
4. Jim Beattie1984 12
Mike Moore1987 12
6. Mike Moore1986 11
7. Randy Johnson1993 10
8. Rick Honeycutt1980 9
Randy Johnson1994 9
Mark Langston1986 9
Mark Langston1988 9
Mike Moore1988 9
Mike Morgan1986 9
Home Runs
1. Jamie Moyer2004 44
2. Aríel Miranda2017 37
3. Yusei Kikuchi2019 36
4. Scott Bankhead1987 35
Jason Vargas2012 35
6. Jeff Fassero1999 34
Ryan Franklin2003 34
8. Jeff Fassero1998 33
Ryan Franklin2004 33
10. Glenn Abbott1977 32
Floyd Bannister1982 32
Mark Langston1988 32
Robbie Ray2022 32
Bases on Balls
1. Randy Johnson1991 152
2. Randy Johnson1992 144
3. Mark Langston1986 123
4. Randy Johnson1990 120
5. Mark Langston1984 118
6. Mark Langston1987 114
7. Mark Langston1988 110
8. Matt Young1990 107
9. Randy Johnson1993 99
10. Jim Beattie1980 98
Hits
1. Mike Moore1986 279
2. Mike Moore1987 268
3. Sterling Hitchcock1996 245
Mike Morgan1987 245
Gaylord Perry1982 245
6. Mike Morgan1986 243
7. Mark Langston1987 242
Matt Young1985 242
9. Mike Moore1984 236
10. Jamie Moyer1999 235
Strikeouts / Base On Balls
1. Marco Gonzales2020 9.143
2. George Kirby2023 9.053
3. Hisashi Iwakuma2014 7.333
4. Félix Hernández2014 5.391
5. Logan Gilbert2023 5.25
6. Félix Hernández2013 4.696
7. Marco Gonzales2018 4.531
8. Randy Johnson1995 4.523
9. Hisashi Iwakuma2013 4.405
10. Félix Hernández2012 3.982
Home Runs per 9 IP
1. Randy Johnson1995 0.504
2. Dave Fleming1992 0.512
3. Bill Swift1988 0.515
4. Félix Hernández2012 0.543
5. Jim Beattie1983 0.549
6. Jim Beattie1984 0.555
7. Randy Johnson1992 0.556
8. Félix Hernández2009 0.566
9. Erik Hanson1990 0.572
10. Matt Young1990 0.599
Losses
1. Mike Moore1987 19
Matt Young1985 19
3. Matt Young1990 18
4. Erik Hanson1992 17
Rick Honeycutt1980 17
Mike Moore1984 17
Mike Morgan1986 17
Mike Morgan1987 17
Bob Stoddard1983 17
10. Jim Beattie1984 16
Ryan Franklin2004 16
Mike Parrott1980 16
Joe Saunders2013 16
Earned Runs
1. Mark Langston1986 129
2. Mike Moore1986 127
3. Mike Moore1987 121
4. Matt Young1985 119
5. Joel Piñeiro2005 118
6. Sterling Hitchcock1996 117
Mike Moore1984 117
Jamie Moyer2004 117
Joel Piñeiro2006 117
10. Mark Langston1987 116
Wild Pitches
1. Félix Hernández2014 18
2. Félix Hernández2009 17
3. Matt Young1990 16
4. Miguel Batista2007 15
James Paxton2017 15
6. Erik Hanson1991 14
Félix Hernández2010 14
8. Jeff Fassero1997 13
Félix Hernández2012 13
Félix Hernández2013 13
Randy Johnson1992 13
Gaylord Perry1982 13
Hit By Pitch
1. Randy Johnson1992 18
2. Randy Johnson1993 16
3. Glenn Abbott1977 12
Félix Hernández2012 12
Félix Hernández2018 12
Randy Johnson1991 12
Mike Moore1986 12
Ron Villone2004 12
9. Roenis Elías2014 11
Freddy García2003 11
Randy Johnson1998 11
Jamie Moyer2004 11
Batters Faced
1. Mark Langston1987 1152
2. Mike Moore1986 1145
3. Mark Langston1988 1078
4. Mark Langston1986 1057
5. Randy Johnson1993 1043
6. Floyd Bannister1982 1022
7. Mike Moore1987 1020
8. Mike Moore1985 1016
9. Jeff Fassero1997 1010
10. Félix Hernández2010 1001
Games Finished
1. Edwin Díaz2018 65
J.J. Putz2007 65
3. Bill Caudill1982 64
Fernando Rodney2014 64
5. Kazuhiro Sasaki2001 63
6. Brandon League2011 60
José Mesa1999 60
Mike Schooler1989 60
9. Kazuhiro Sasaki2000 58
10. J.J. Putz2006 57
Adjusted ERA+
1. Randy Johnson1997 197
2. Randy Johnson1995 193
3. Félix Hernández2010 174
4. Félix Hernández2009 171
5. Félix Hernández2014 170
6. Randy Johnson1994 152
7. Marco Gonzales2020 138
Hisashi Iwakuma2013 138
9. Freddy García2001 135
Randy Johnson1993 135
Fielding Independent Pitching
1. Randy Johnson1995 2.08
2. Félix Hernández2014 2.56
3. Félix Hernández2013 2.61
4. Erik Hanson1990 2.74
5. Randy Johnson1997 2.82
6. Félix Hernández2012 2.84
7. Félix Hernández2010 3.04
8. Randy Johnson1993 3.05
9. Félix Hernández2009 3.09
10. Félix Hernández2011 3.13
Adj. Pitching Runs
1. Randy Johnson1995 54
2. Randy Johnson1997 53
3. Félix Hernández2009 44
4. Félix Hernández2010 43
5. Félix Hernández2014 38
6. Randy Johnson1993 34
7. Randy Johnson1994 32
8. Freddy García2001 31
9. Hisashi Iwakuma2013 28
Jamie Moyer1998 28
Adj. Pitching Wins
1. Randy Johnson1995 5.5
Randy Johnson1997 5.5
3. Félix Hernández2009 4.6
Félix Hernández2010 4.6
5. Félix Hernández2014 4.2
6. Randy Johnson1993 3.5
7. Freddy García2001 3.2
Randy Johnson1994 3.2
9. Hisashi Iwakuma2013 3.0
10. Jamie Moyer1998 2.8
Base-Out Runs Saved (RE24) †
1. Randy Johnson1995 58.79
2. Randy Johnson1997 56.38
3. Félix Hernández2009 42.63
4. Félix Hernández2010 42.22
5. Félix Hernández2014 39.91
6. Randy Johnson1993 38.87
7. Randy Johnson1994 37.74
8. Freddy García2001 35.49
9. Jamie Moyer1999 34.69
10. Jamie Moyer2002 34.17
Win Probability Added (WPA) †
1. Randy Johnson1995 6.5
2. J.J. Putz2007 6.0
3. Randy Johnson1997 5.8
4. Bill Caudill1982 5.7
5. Edwin Díaz2018 4.8
Félix Hernández2010 4.8
7. Félix Hernández2012 4.4
8. Randy Johnson1993 4.2
J.J. Putz2006 4.2
10. Félix Hernández2009 4.1
Sit. Wins Saved (WPA/LI) †
1. Randy Johnson1995 6.0
2. Félix Hernández2014 4.8
3. Randy Johnson1993 4.5
4. Randy Johnson1997 4.4
5. Freddy García2001 3.9
6. Félix Hernández2009 3.8
Félix Hernández2010 3.8
8. Jamie Moyer2002 3.6
9. Randy Johnson1994 3.5
10. Hisashi Iwakuma2013 3.4
Championship WPA (cWPA) †
1. Randy Johnson1995 11.8
2. Randy Johnson1997 4.7
3. J.J. Putz2007 4.0
4. Norm Charlton1995 3.4
5. Bill Caudill1982 3.3
Kazuhiro Sasaki2000 3.3
7. Edwin Díaz2018 3.2
8. Félix Hernández2014 3.0
Jamie Moyer2003 3.0
10. Jamie Moyer2002 2.5
Base-Out Wins Saved (REW) †
1. Randy Johnson1995 6.1
2. Randy Johnson1997 6.0
3. Félix Hernández2010 4.7
4. Félix Hernández2009 4.6
Félix Hernández2014 4.6
6. Randy Johnson1993 4.0
7. Hisashi Iwakuma2013 3.9
8. Freddy García2001 3.8
Randy Johnson1994 3.8
10. Jamie Moyer2002 3.6

Data Notes