Single-Season Top 10 Leaders

WAR for Pitchers †
1. Randy Johnson • 1995 8.6
2. Randy Johnson • 1997 8.0
3. Félix Hernández • 2010 7.2
4. Hisashi Iwakuma • 2013 7.0
5. Randy Johnson • 1993 6.6
6. Jamie Moyer • 1999 6.5
7. Félix Hernández • 2014 6.4
8. Mike Moore • 1985 6.3
9. Félix Hernández • 2009 5.9
Mark Langston • 1987 5.9
Earned Run Average
1. Félix Hernández • 2014 2.14
2. Félix Hernández • 2010 2.27
3. Randy Johnson • 1997 2.28
4. Randy Johnson • 1995 2.48
5. Félix Hernández • 2009 2.49
6. Hisashi Iwakuma • 2013 2.66
7. Bryce Miller • 2024 2.94
8. Félix Hernández • 2013 3.04
9. Freddy García • 2001 3.05
10. Félix Hernández • 2012 3.06
Wins
1. Jamie Moyer • 2003 21
2. Randy Johnson • 1997 20
Jamie Moyer • 2001 20
4. Félix Hernández • 2009 19
Randy Johnson • 1993 19
Mark Langston • 1987 19
7. Freddy García • 2001 18
Erik Hanson • 1990 18
Félix Hernández • 2015 18
Randy Johnson • 1995 18
Win-Loss %
1. Randy Johnson • 1995 .900
2. Randy Johnson • 1997 .833
3. Paul Abbott • 2001 .810
4. Félix Hernández • 2009 .792
5. Marco Gonzales • 2020 .778
6. Jamie Moyer • 1997 .773
7. Jamie Moyer • 2001 .769
8. Freddy García • 2001 .750
Jamie Moyer • 2003 .750
Aaron Sele • 2001 .750
Walks & Hits per IP
1. Logan Gilbert • 2024 0.887
2. Félix Hernández • 2014 0.915
3. Marco Gonzales • 2020 0.947
4. Bryce Miller • 2024 0.976
5. Hisashi Iwakuma • 2013 1.006
6. George Kirby • 2023 1.038
7. Randy Johnson • 1995 1.045
8. Hisashi Iwakuma • 2014 1.050
9. Randy Johnson • 1997 1.052
10. Félix Hernández • 2010 1.057
Hits per 9 IP
1. Randy Johnson • 1997 6.211
2. Logan Gilbert • 2024 6.383
3. Félix Hernández • 2014 6.483
4. Randy Johnson • 1993 6.521
5. Bryce Miller • 2024 6.538
6. Randy Johnson • 1992 6.590
7. Randy Johnson • 1995 6.677
8. Randy Johnson • 1991 6.750
9. Randy Johnson • 1994 6.907
10. Félix Hernández • 2010 6.993
Bases On Balls per 9 IP
1. George Kirby • 2023 0.897
2. Marco Gonzales • 2020 0.904
3. Hisashi Iwakuma • 2014 1.056
4. George Kirby • 2024 1.084
5. Logan Gilbert • 2024 1.596
6. Jamie Moyer • 1998 1.613
7. Mike Leake • 2018 1.648
8. Doug Fister • 2010 1.684
9. Logan Gilbert • 2023 1.699
10. Hisashi Iwakuma • 2013 1.721
Strikeouts per 9 IP
1. Randy Johnson • 1995 12.345
2. Randy Johnson • 1997 12.296
3. Randy Johnson • 1993 10.856
4. Randy Johnson • 1994 10.674
5. Randy Johnson • 1992 10.312
6. Randy Johnson • 1991 10.192
7. Robbie Ray • 2022 10.095
8. Luis Castillo • 2023 10.005
9. Félix Hernández • 2013 9.514
10. Logan Gilbert • 2024 9.489
Games Played
1. Matt Brash • 2023 78
Ed Vande Berg • 1982 78
3. Ed Vande Berg • 1985 76
4. Mark Lowe • 2009 75
Justin Topa • 2023 75
6. David Aardsma • 2009 73
Edwin Díaz • 2018 73
Mike Jackson • 1996 73
George Sherrill • 2007 73
Tom Wilhelmsen • 2012 73
Saves
1. Edwin Díaz • 2018 57
2. Fernando Rodney • 2014 48
3. Kazuhiro Sasaki • 2001 45
4. J.J. Putz • 2007 40
5. David Aardsma • 2009 38
6. Brandon League • 2011 37
Kazuhiro Sasaki • 2000 37
Kazuhiro Sasaki • 2002 37
9. Eddie Guardado • 2005 36
J.J. Putz • 2006 36
Innings Pitched
1. Mark Langston • 1987 272.0
2. Mike Moore • 1986 266.0
3. Mark Langston • 1988 261.1
4. Randy Johnson • 1993 255.1
5. Félix Hernández • 2010 249.2
6. Floyd Bannister • 1982 247.0
Mike Moore • 1985 247.0
8. Mark Langston • 1986 239.1
9. Freddy García • 2001 238.2
Félix Hernández • 2009 238.2
Strikeouts
1. Randy Johnson • 1993 308
2. Randy Johnson • 1995 294
3. Randy Johnson • 1997 291
4. Mark Langston • 1987 262
5. Félix Hernández • 2014 248
6. Mark Langston • 1986 245
7. Randy Johnson • 1992 241
8. Mark Langston • 1988 235
9. Félix Hernández • 2010 232
10. Randy Johnson • 1991 228
Complete Games
1. Mark Langston • 1987 14
Mike Moore • 1985 14
3. Mike Parrott • 1979 13
4. Jim Beattie • 1984 12
Mike Moore • 1987 12
6. Mike Moore • 1986 11
7. Randy Johnson • 1993 10
8. Rick Honeycutt • 1980 9
Randy Johnson • 1994 9
Mark Langston • 1986 9
Mark Langston • 1988 9
Mike Moore • 1988 9
Mike Morgan • 1986 9
Home Runs
1. Jamie Moyer • 2004 44
2. Aríel Miranda • 2017 37
3. Yusei Kikuchi • 2019 36
4. Scott Bankhead • 1987 35
Jason Vargas • 2012 35
6. Jeff Fassero • 1999 34
Ryan Franklin • 2003 34
8. Jeff Fassero • 1998 33
Ryan Franklin • 2004 33
10. Glenn Abbott • 1977 32
Floyd Bannister • 1982 32
Mark Langston • 1988 32
Robbie Ray • 2022 32
Bases on Balls
1. Randy Johnson • 1991 152
2. Randy Johnson • 1992 144
3. Mark Langston • 1986 123
4. Randy Johnson • 1990 120
5. Mark Langston • 1984 118
6. Mark Langston • 1987 114
7. Mark Langston • 1988 110
8. Matt Young • 1990 107
9. Randy Johnson • 1993 99
10. Jim Beattie • 1980 98
Hits
1. Mike Moore • 1986 279
2. Mike Moore • 1987 268
3. Sterling Hitchcock • 1996 245
Mike Morgan • 1987 245
Gaylord Perry • 1982 245
6. Mike Morgan • 1986 243
7. Mark Langston • 1987 242
Matt Young • 1985 242
9. Mike Moore • 1984 236
10. Jamie Moyer • 1999 235
Strikeouts / Base On Balls
1. Marco Gonzales • 2020 9.143
2. George Kirby • 2023 9.053
3. George Kirby • 2024 7.783
4. Hisashi Iwakuma • 2014 7.333
5. Logan Gilbert • 2024 5.946
6. Félix Hernández • 2014 5.391
7. Logan Gilbert • 2023 5.25
8. Félix Hernández • 2013 4.696
9. Marco Gonzales • 2018 4.531
10. Randy Johnson • 1995 4.523
Home Runs per 9 IP
1. Randy Johnson • 1995 0.504
2. Dave Fleming • 1992 0.512
3. Bill Swift • 1988 0.515
4. Félix Hernández • 2012 0.543
5. Jim Beattie • 1983 0.549
6. Jim Beattie • 1984 0.555
7. Randy Johnson • 1992 0.556
8. Félix Hernández • 2009 0.566
9. Erik Hanson • 1990 0.572
10. Matt Young • 1990 0.599
Losses
1. Mike Moore • 1987 19
Matt Young • 1985 19
3. Matt Young • 1990 18
4. Erik Hanson • 1992 17
Rick Honeycutt • 1980 17
Mike Moore • 1984 17
Mike Morgan • 1986 17
Mike Morgan • 1987 17
Bob Stoddard • 1983 17
10. Jim Beattie • 1984 16
Ryan Franklin • 2004 16
Mike Parrott • 1980 16
Joe Saunders • 2013 16
Earned Runs
1. Mark Langston • 1986 129
2. Mike Moore • 1986 127
3. Mike Moore • 1987 121
4. Matt Young • 1985 119
5. Joel Piñeiro • 2005 118
6. Sterling Hitchcock • 1996 117
Mike Moore • 1984 117
Jamie Moyer • 2004 117
Joel Piñeiro • 2006 117
10. Mark Langston • 1987 116
Wild Pitches
1. Félix Hernández • 2014 18
2. Félix Hernández • 2009 17
3. Matt Young • 1990 16
4. Miguel Batista • 2007 15
James Paxton • 2017 15
6. Erik Hanson • 1991 14
Félix Hernández • 2010 14
8. Jeff Fassero • 1997 13
Félix Hernández • 2012 13
Félix Hernández • 2013 13
Randy Johnson • 1992 13
Gaylord Perry • 1982 13
Hit By Pitch
1. Randy Johnson • 1992 18
2. Randy Johnson • 1993 16
3. Glenn Abbott • 1977 12
Félix Hernández • 2012 12
Félix Hernández • 2018 12
Randy Johnson • 1991 12
Mike Moore • 1986 12
Ron Villone • 2004 12
9. Roenis Elías • 2014 11
Freddy García • 2003 11
Randy Johnson • 1998 11
Jamie Moyer • 2004 11
Batters Faced
1. Mark Langston • 1987 1152
2. Mike Moore • 1986 1145
3. Mark Langston • 1988 1078
4. Mark Langston • 1986 1057
5. Randy Johnson • 1993 1043
6. Floyd Bannister • 1982 1022
7. Mike Moore • 1987 1020
8. Mike Moore • 1985 1016
9. Jeff Fassero • 1997 1010
10. Félix Hernández • 2010 1001
Games Finished
1. Edwin Díaz • 2018 65
J.J. Putz • 2007 65
3. Bill Caudill • 1982 64
Fernando Rodney • 2014 64
5. Kazuhiro Sasaki • 2001 63
6. Brandon League • 2011 60
José Mesa • 1999 60
Mike Schooler • 1989 60
9. Kazuhiro Sasaki • 2000 58
10. J.J. Putz • 2006 57
Adjusted ERA+
1. Randy Johnson • 1997 197
2. Randy Johnson • 1995 193
3. Félix Hernández • 2010 174
4. Félix Hernández • 2009 171
5. Félix Hernández • 2014 170
6. Randy Johnson • 1994 152
7. Marco Gonzales • 2020 138
Hisashi Iwakuma • 2013 138
9. Freddy García • 2001 135
Randy Johnson • 1993 135
Fielding Independent Pitching
1. Randy Johnson • 1995 2.08
2. Félix Hernández • 2014 2.56
3. Félix Hernández • 2013 2.61
4. Erik Hanson • 1990 2.74
5. Randy Johnson • 1997 2.82
6. Félix Hernández • 2012 2.84
7. Félix Hernández • 2010 3.04
8. Randy Johnson • 1993 3.05
9. Félix Hernández • 2009 3.09
10. Félix Hernández • 2011 3.13
Adj. Pitching Runs
1. Randy Johnson • 1995 54
2. Randy Johnson • 1997 53
3. Félix Hernández • 2009 44
4. Félix Hernández • 2010 43
5. Félix Hernández • 2014 38
6. Randy Johnson • 1993 34
7. Randy Johnson • 1994 32
8. Freddy García • 2001 31
9. Hisashi Iwakuma • 2013 28
Jamie Moyer • 1998 28
Adj. Pitching Wins
1. Randy Johnson • 1995 5.5
Randy Johnson • 1997 5.5
3. Félix Hernández • 2009 4.6
Félix Hernández • 2010 4.6
5. Félix Hernández • 2014 4.2
6. Randy Johnson • 1993 3.5
7. Freddy García • 2001 3.2
Randy Johnson • 1994 3.2
9. Hisashi Iwakuma • 2013 3.0
10. Jamie Moyer • 1998 2.8
Base-Out Runs Saved (RE24) †
1. Randy Johnson • 1995 58.79
2. Randy Johnson • 1997 56.38
3. Félix Hernández • 2009 42.63
4. Félix Hernández • 2010 42.22
5. Félix Hernández • 2014 39.91
6. Randy Johnson • 1993 38.87
7. Randy Johnson • 1994 37.74
8. Freddy García • 2001 35.49
9. Jamie Moyer • 1999 34.69
10. Jamie Moyer • 2002 34.17
Win Probability Added (WPA) †
1. Randy Johnson • 1995 6.5
2. J.J. Putz • 2007 6.0
3. Randy Johnson • 1997 5.8
4. Bill Caudill • 1982 5.7
5. Edwin Díaz • 2018 4.8
Félix Hernández • 2010 4.8
7. Félix Hernández • 2012 4.4
8. Randy Johnson • 1993 4.2
J.J. Putz • 2006 4.2
10. Félix Hernández • 2009 4.1
Sit. Wins Saved (WPA/LI) †
1. Randy Johnson • 1995 6.0
2. Félix Hernández • 2014 4.8
3. Randy Johnson • 1993 4.5
4. Randy Johnson • 1997 4.4
5. Freddy García • 2001 3.9
6. Félix Hernández • 2009 3.8
Félix Hernández • 2010 3.8
8. Bryce Miller • 2024 3.6
Jamie Moyer • 2002 3.6
10. Randy Johnson • 1994 3.5
Championship WPA (cWPA) †
1. Randy Johnson • 1995 11.8
2. Randy Johnson • 1997 4.7
3. J.J. Putz • 2007 4.0
4. Norm Charlton • 1995 3.4
5. Bill Caudill • 1982 3.3
Kazuhiro Sasaki • 2000 3.3
7. Edwin Díaz • 2018 3.2
8. Félix Hernández • 2014 3.0
Jamie Moyer • 2003 3.0
10. Jamie Moyer • 2002 2.5
Base-Out Wins Saved (REW) †
1. Randy Johnson • 1995 6.1
2. Randy Johnson • 1997 6.0
3. Félix Hernández • 2010 4.7
4. Félix Hernández • 2009 4.6
Félix Hernández • 2014 4.6
6. Randy Johnson • 1993 4.0
7. Hisashi Iwakuma • 2013 3.9
8. Freddy García • 2001 3.8
Randy Johnson • 1994 3.8
10. Jamie Moyer • 2002 3.6

Data Notes