Since 1900, Jeff Ridgway and Joe Cleary are tied for the highest ERA by a relief pitcher in a season, with an ERA of 189.00.
| NAME | ERA | SEASON | TM | G | W | L | W% | GS | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Ridgway | 189.00 | 2007 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 7 | 7 | 7 | 1 | 1 | 1 | 0 | 0 | 10 | 0 | 0.00 | 27.00 | 0.00 | 27.00 | 0.0 | 10.0 | 24.00 | .857 | 189.00 | 189.00 | ||
| 2 | | J. Cleary | 189.00 | 1945 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.1 | 5 | 7 | 7 | 0 | 3 | 0 | 0 | 9 | 1 | 27.00 | 81.00 | 0.33 | 0.00 | 11.1 | 33.3 | 24.00 | 1.000 | 189.00 | 135.00 | |||
| 3 | | C. Estévez | 162.00 | 2026 | 1 | 0 | 1 | .000 | 0 | 0 | 0 | 0 | 0 | 0.1 | 4 | 6 | 6 | 1 | 2 | 0 | 1 | 0 | 7 | 0 | 0.00 | 54.00 | 0.00 | 27.00 | 0.0 | 28.6 | 18.00 | .750 | 162.00 | 108.00 | |
| 4 | | A. Williams | 162.00 | 2019 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.1 | 5 | 6 | 6 | 2 | 1 | 0 | 0 | 0 | 7 | 0 | 27.00 | 27.00 | 1.00 | 54.00 | 14.3 | 14.3 | 18.00 | 1.000 | 162.00 | 135.00 | ||
| 5 | | J. Hudson | 162.00 | 1998 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 2 | 6 | 6 | 0 | 4 | 0 | 0 | 1 | 7 | 0 | 0.00 | 108.00 | 0.00 | 0.00 | 0.0 | 57.1 | 18.00 | .667 | 162.00 | 54.00 | ||
| 6 | | W. Taylor | 162.00 | 1991 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 5 | 6 | 6 | 1 | 1 | 0 | 0 | 0 | 7 | 1 | 0.00 | 27.00 | 0.00 | 27.00 | 0.0 | 14.3 | 18.00 | .800 | 162.00 | 135.00 | ||
| 7 | | D. Drago | 162.00 | 1971 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.1 | 5 | 6 | 6 | 1 | 1 | 0 | 0 | 0 | 7 | 0 | 27.00 | 27.00 | 1.00 | 27.00 | 14.3 | 14.3 | 18.00 | 1.000 | 162.00 | 135.00 | ||
| 8 | | T. Qualters | 162.00 | 1953 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 4 | 6 | 6 | 1 | 1 | 1 | 0 | 0 | 7 | 1 | 0.00 | 27.00 | 0.00 | 27.00 | 0.0 | 14.3 | 15.00 | .750 | 162.00 | 108.00 | ||
| 9 | | C. Fox | 135.00 | 2009 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 2 | 5 | 5 | 0 | 3 | 0 | 0 | 0 | 6 | 1 | 0.00 | 81.00 | 0.00 | 0.00 | 0.0 | 50.0 | 15.00 | .667 | 135.00 | 54.00 | ||
| 10 | | J. Mabry | 135.00 | 2001 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 3 | 5 | 5 | 0 | 3 | 0 | 0 | 0 | 7 | 0 | 0.00 | 81.00 | 0.00 | 0.00 | 0.0 | 42.9 | 18.00 | .750 | 135.00 | 81.00 | ||
| 11 | | P. Spoljaric | 135.00 | 1994 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 3 | 5 | 5 | 2 | 3 | 0 | 0 | 1 | 8 | 0 | 0.00 | 81.00 | 0.00 | 54.00 | 0.0 | 37.5 | 18.00 | .333 | 135.00 | 81.00 | ||
| 12 | | M. Capel | 135.00 | 1990 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.1 | 6 | 5 | 6 | 0 | 1 | 1 | 0 | 0 | 9 | 0 | 27.00 | 27.00 | 1.00 | 0.00 | 11.1 | 11.1 | 21.00 | 1.000 | 162.00 | 162.00 | ||
| 13 | | C. Dudley | 135.00 | 1933 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 6 | 5 | 5 | 0 | 1 | 0 | 0 | 8 | 0 | 0.00 | 27.00 | 0.00 | 0.00 | 0.0 | 12.5 | 21.00 | .857 | 135.00 | 162.00 | |||
| 14 | | K. Harrison | 108.00 | 2026 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 5 | 4 | 4 | 0 | 1 | 0 | 0 | 0 | 7 | 0 | 0.00 | 27.00 | 0.00 | 0.00 | 0.0 | 14.3 | 18.00 | .833 | 108.00 | 135.00 | ||
| 15 | | Y. Marte | 108.00 | 2026 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.1 | 3 | 4 | 4 | 0 | 1 | 1 | 0 | 1 | 6 | 0 | 27.00 | 27.00 | 1.00 | 0.00 | 16.7 | 16.7 | 12.00 | 1.000 | 108.00 | 81.00 | ||
| 16 | | J. Castillo | 108.00 | 2023 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 2 | 4 | 4 | 0 | 2 | 1 | 0 | 0 | 6 | 0 | 0.00 | 54.00 | 0.00 | 0.00 | 0.0 | 33.3 | 12.00 | .667 | 108.00 | 54.00 | ||
| 17 | | M. Mastrobuoni | 108.00 | 2023 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 4 | 4 | 4 | 1 | 0 | 0 | 1 | 0 | 5 | 0 | 0.00 | 0.00 | 27.00 | 0.0 | 0.0 | 12.00 | .750 | 108.00 | 108.00 | |||
| 18 | | W. Cuevas | 108.00 | 2017 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.1 | 3 | 4 | 4 | 0 | 0 | 1 | 0 | 0 | 5 | 0 | 27.00 | 0.00 | 0.00 | 20.0 | 0.0 | 9.00 | 1.000 | 108.00 | 81.00 | |||
| 19 | | P. Hughes | 108.00 | 2013 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 3 | 4 | 4 | 0 | 1 | 0 | 0 | 0 | 5 | 0 | 0.00 | 27.00 | 0.00 | 0.00 | 0.0 | 20.0 | 12.00 | .750 | 108.00 | 81.00 | ||
| 20 | | D. Carpenter | 108.00 | 2013 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.1 | 2 | 4 | 4 | 1 | 2 | 0 | 0 | 0 | 5 | 1 | 27.00 | 54.00 | 0.50 | 27.00 | 20.0 | 40.0 | 12.00 | 1.000 | 108.00 | 54.00 | ||
| 21 | | G. Olson | 108.00 | 2012 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 3 | 4 | 4 | 0 | 1 | 0 | 0 | 0 | 5 | 0 | 0.00 | 27.00 | 0.00 | 0.00 | 0.0 | 20.0 | 12.00 | .750 | 108.00 | 81.00 | ||
| 22 | | E. Gonzalez | 108.00 | 2005 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.1 | 2 | 4 | 4 | 1 | 2 | 0 | 0 | 0 | 5 | 1 | 27.00 | 54.00 | 0.50 | 27.00 | 20.0 | 40.0 | 12.00 | 1.000 | 108.00 | 54.00 | ||
| 23 | | J. Paniagua | 108.00 | 2003 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 3 | 4 | 4 | 0 | 1 | 0 | 0 | 0 | 5 | 0 | 0.00 | 27.00 | 0.00 | 0.00 | 0.0 | 20.0 | 12.00 | .750 | 108.00 | 81.00 | ||
| 24 | | B. Brewer | 108.00 | 1998 | 2 | 0 | 1 | .000 | 0 | 0 | 0 | 0 | 0 | 0.1 | 3 | 4 | 4 | 0 | 2 | 0 | 0 | 0 | 6 | 0 | 0.00 | 54.00 | 0.00 | 0.00 | 0.0 | 33.3 | 15.00 | .750 | 108.00 | 81.00 | |
| 25 | | P. Filson | 108.00 | 1990 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 2 | 4 | 4 | 0 | 2 | 0 | 0 | 0 | 5 | 0 | 0.00 | 54.00 | 0.00 | 0.00 | 0.0 | 40.0 | 12.00 | .667 | 108.00 | 54.00 | ||
TBD
WSH
KCR
WSH
MIL
NYY
PHN
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TOR
MIL
PIT
CIN
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DET
LAA
NYM
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CWSStatMuse has game-level data for ERA going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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| NL East | W | L | PCT | GB |
|---|---|---|---|---|
 Braves - y | 92 | 64 | .590 | |
86 | 70 | .551 | 6.0 | |
76 | 80 | .487 | 16.0 | |
73 | 84 | .465 | 19.5 | |
71 | 85 | .455 | 21.0 | |
| NL Central | W | L | PCT | GB |
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87 | 69 | .558 | 11.0 | |
79 | 77 | .506 | 19.0 | |
76 | 80 | .487 | 22.0 | |
72 | 84 | .462 | 26.0 | |
| NL West | W | L | PCT | GB |
 Dodgers - y | 96 | 60 | .615 | |
87 | 69 | .558 | 9.0 | |
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