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Single-Season Top 10 Leaders

WAR for Pitchers †
1. Randy Johnson1995 8.6
2. Randy Johnson1997 8.0
3. Felix Hernandez2010 7.2
Hisashi Iwakuma2013 7.2
5. Randy Johnson1993 6.6
6. Jamie Moyer1999 6.5
7. Felix Hernandez2014 6.4
8. Mike Moore1985 6.3
9. Felix Hernandez2009 5.9
Mark Langston1987 5.9
Earned Run Average
1. Felix Hernandez2014 2.14
2. Felix Hernandez2010 2.27
3. Randy Johnson1997 2.28
4. Cliff Lee2010 2.34
5. Bill Swift1990 2.39
6. Randy Johnson1995 2.48
7. Felix Hernandez2009 2.49
8. Jarrod Washburn2009 2.64
9. Hisashi Iwakuma2013 2.66
10. Bryan Clark1982 2.75
Wins
1. Jamie Moyer2003 21
2. Randy Johnson1997 20
Jamie Moyer2001 20
4. Felix Hernandez2009 19
Randy Johnson1993 19
Mark Langston1987 19
7. Freddy Garcia2001 18
Erik Hanson1990 18
Felix Hernandez2015 18
Randy Johnson1995 18
Win-Loss %
1. Randy Johnson1995 .900
2. Randy Johnson1997 .833
3. Paul Abbott2001 .810
4. Dominic Leone2014 .800
5. Felix Hernandez2009 .792
6. Jamie Moyer1997 .773
7. Jamie Moyer2001 .769
8. Freddy Garcia2001 .750
Jamie Moyer2003 .750
Aaron Sele2001 .750
Walks & Hits per IP
1. Felix Hernandez2014 0.915
2. Cliff Lee2010 0.945
3. Hisashi Iwakuma2013 1.006
4. Randy Johnson1995 1.045
5. Hisashi Iwakuma2014 1.050
6. Randy Johnson1997 1.052
7. Felix Hernandez2010 1.057
8. Hisashi Iwakuma2015 1.064
9. Jarrod Washburn2009 1.068
10. Jamie Moyer2002 1.075
Hits per 9 IP
1. Randy Johnson1997 6.211
2. Felix Hernandez2014 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. Felix Hernandez2010 6.993
9. Michael Pineda2011 7.000
10. Randy Johnson1990 7.129
Bases On Balls per 9 IP
1. Cliff Lee2010 0.521
2. Hisashi Iwakuma2014 1.056
3. Mike Leake2019 1.248
4. Blake Beavan2012 1.418
5. Hisashi Iwakuma2015 1.458
6. Bill Swift1990 1.477
7. Jamie Moyer1998 1.613
8. Mike Leake2018 1.648
9. Ryan Franklin2002 1.669
10. Doug Fister2010 1.684
Strikeouts per 9 IP
1. Randy Johnson1995 12.345
2. Randy Johnson1997 12.296
3. Randy Johnson1998 11.981
4. James Paxton2018 11.676
5. Randy Johnson1993 10.856
6. Randy Johnson1994 10.674
7. James Paxton2017 10.324
8. Randy Johnson1992 10.312
9. Randy Johnson1991 10.192
10. Felix Hernandez2013 9.514
Games Played
1. Ed Vande Berg1982 78
2. Ed Vande Berg1985 76
3. Mark Lowe2009 75
4. David Aardsma2009 73
Edwin Diaz2018 73
Michael Jackson1996 73
George Sherrill2007 73
Tom Wilhelmsen2012 73
9. Sean Green2008 72
Michael Jackson1991 72
J.J. Putz2006 72
Arthur Rhodes2000 72
George Sherrill2006 72
Saves
1. Edwin Diaz2018 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. Felix Hernandez2010 249.2
6. Floyd Bannister1982 247.0
Mike Moore1985 247.0
8. Mark Langston1986 239.1
9. Freddy Garcia2001 238.2
Felix Hernandez2009 238.2
Strikeouts
1. Randy Johnson1993 308
2. Randy Johnson1995 294
3. Randy Johnson1997 291
4. Mark Langston1987 262
5. Felix Hernandez2014 248
6. Mark Langston1986 245
7. Randy Johnson1992 241
8. Mark Langston1988 235
9. Felix Hernandez2010 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. Ariel 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
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. Cliff Lee2010 14.833
2. Hisashi Iwakuma2014 7.333
3. Felix Hernandez2014 5.391
4. Hisashi Iwakuma2015 5.286
5. Mike Leake2019 5.263
6. James Paxton2018 4.952
7. James Paxton2016 4.875
8. Felix Hernandez2013 4.696
9. Marco Gonzales2018 4.531
10. Randy Johnson1995 4.523
Home Runs per 9 IP
1. Shane Rawley1980 0.238
2. Bill Swift1990 0.281
3. Jim Todd1978 0.338
4. Bill Swift1986 0.390
5. Doug Fister2011 0.432
6. Cliff Lee2010 0.434
7. Bryan Clark1982 0.471
8. Bill Swift1989 0.485
9. Randy Johnson1995 0.504
10. Brian Holman1989 0.507
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 Pineiro2005 118
6. Sterling Hitchcock1996 117
Mike Moore1984 117
Jamie Moyer2004 117
Joel Pineiro2006 117
10. Mark Langston1987 116
Wild Pitches
1. Felix Hernandez2014 18
2. Felix Hernandez2009 17
3. Matt Young1990 16
4. Miguel Batista2007 15
James Paxton2017 15
6. Erik Hanson1991 14
Felix Hernandez2010 14
8. Jeff Fassero1997 13
Felix Hernandez2012 13
Felix Hernandez2013 13
Randy Johnson1992 13
Gaylord Perry1982 13
Hit By Pitch
1. Randy Johnson1992 18
2. Randy Johnson1993 16
3. Glenn Abbott1977 12
Felix Hernandez2012 12
Felix Hernandez2018 12
Randy Johnson1991 12
Mike Moore1986 12
Ron Villone2004 12
9. Roenis Elias2014 11
Freddy Garcia2003 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. Felix Hernandez2010 1001
Games Finished
1. Edwin Diaz2018 65
J.J. Putz2007 65
3. Bill Caudill1982 64
Fernando Rodney2014 64
5. Kazuhiro Sasaki2001 63
6. Brandon League2011 60
Jose 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. Felix Hernandez2010 174
4. Felix Hernandez2009 171
5. Felix Hernandez2014 170
6. Cliff Lee2010 168
7. Bill Swift1990 164
8. Jarrod Washburn2009 161
9. Bryan Clark1982 155
10. Randy Johnson1994 152
Fielding Independent Pitching
1. Randy Johnson1995 2.08
2. Cliff Lee2010 2.16
3. Felix Hernandez2014 2.56
4. Felix Hernandez2013 2.61
James Paxton2017 2.61
6. Erik Hanson1990 2.74
7. James Paxton2016 2.80
8. Randy Johnson1997 2.82
9. Felix Hernandez2012 2.84
10. Scott Bankhead1988 2.89
Adj. Pitching Runs
1. Randy Johnson1995 54
2. Randy Johnson1997 53
3. Felix Hernandez2009 44
4. Felix Hernandez2010 43
5. Felix Hernandez2014 38
6. Randy Johnson1993 34
7. Randy Johnson1994 32
8. Freddy Garcia2001 31
9. Hisashi Iwakuma2013 28
Jamie Moyer1998 28
Adj. Pitching Wins
1. Randy Johnson1995 5.5
Randy Johnson1997 5.5
3. Felix Hernandez2009 4.6
Felix Hernandez2010 4.6
5. Felix Hernandez2014 4.2
6. Randy Johnson1993 3.5
7. Freddy Garcia2001 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. Felix Hernandez2009 42.63
4. Felix Hernandez2010 42.22
5. Felix Hernandez2014 39.91
6. Randy Johnson1993 38.87
7. Randy Johnson1994 37.74
8. Freddy Garcia2001 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 Diaz2018 4.8
Felix Hernandez2010 4.8
7. Felix Hernandez2012 4.4
8. Randy Johnson1993 4.2
J.J. Putz2006 4.2
10. Felix Hernandez2009 4.1
Sit. Wins Saved (WPA/LI) †
1. Randy Johnson1995 6.0
2. Felix Hernandez2014 4.8
3. Randy Johnson1993 4.5
4. Randy Johnson1997 4.4
5. Freddy Garcia2001 3.9
6. Felix Hernandez2009 3.8
Felix Hernandez2010 3.8
8. Jamie Moyer2002 3.6
9. Randy Johnson1994 3.5
10. Hisashi Iwakuma2013 3.4
Base-Out Wins Saved (REW) †
1. Randy Johnson1995 6.1
2. Randy Johnson1997 6.0
3. Felix Hernandez2010 4.7
4. Felix Hernandez2009 4.6
Felix Hernandez2014 4.6
6. Randy Johnson1993 4.0
7. Hisashi Iwakuma2013 3.9
8. Freddy Garcia2001 3.8
Randy Johnson1994 3.8
10. Jamie Moyer2002 3.6

Data Notes