Jeff Ridgway, Joe Cleary and Jack Scheible are tied for the highest ERA in a season, with an ERA of 189.00.
| NAME | ERA | IP | SEASON | TM | G | W | L | W% | GS | SO | CG | SHO | SV | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Ridgway | 189.00 | 0.1 | 2007 |  TBD | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 4238 | 60.23 | 1372 | 189.00 | -2.1 | |
| 2 |  | J. Cleary | 189.00 | 0.1 | 1945 |  WSH | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 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 | 5852 | 23.54 | 708 | 135.00 | -0.8 | ||
| 3 |  | J. Scheible | 189.00 | 0.1 | 1894 |  PHI | 1 | 0 | 1 | .000 | 1 | 0 | 0 | 0 | 0 | 6 | 7 | 10 | 0 | 2 | 1 | 0 | 10 | 0 | 0.00 | 54.00 | 0.00 | 0.00 | 0.0 | 20.0 | 24.00 | .857 | 270.00 | 3548 | 30.81 | 578 | 162.00 | -0.9 | |
| 4 |  | A. Williams | 162.00 | 0.1 | 2019 |  WSH | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 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 | 3658 | 84.20 | 1884 | 135.00 | -2.9 | |
| 5 |  | J. Hudson | 162.00 | 0.1 | 1998 |  MIL | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 3830 | 39.13 | 910 | 54.00 | -1.3 | |
| 6 | | T. Qualters | 162.00 | 0.1 | 1953 | PHN | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 6 | 6 | 1 | 1 | 1 | 0 | 7 | 1 | 0.00 | 27.00 | 0.00 | 27.00 | 0.0 | 14.3 | 15.00 | .750 | 162.00 | 3857 | 59.59 | 1428 | 108.00 | -2.1 | ||
| 7 |  | A. Sommerville | 162.00 | 0.1 | 1894 |  BKN | 1 | 0 | 1 | .000 | 1 | 0 | 0 | 0 | 0 | 1 | 6 | 6 | 0 | 5 | 0 | 0 | 7 | 1 | 0.00 | 135.00 | 0.00 | 0.00 | 0.0 | 71.4 | 18.00 | .500 | 162.00 | 3235 | 48.81 | 975 | 27.00 | -1.7 | |
| 8 |  | B. Henley | 135.00 | 0.1 | 2024 |  HOU | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4 | 5 | 5 | 0 | 3 | 1 | 0 | 0 | 9 | 0 | 0.00 | 81.00 | 0.00 | 0.00 | 0.0 | 33.3 | 21.00 | .800 | 135.00 | 3398 | 39.16 | 968 | 108.00 | -1.3 | |
| 9 | | J. Guthrie | 135.00 | 0.2 | 2017 | WSH | 1 | 0 | 1 | .000 | 1 | 0 | 0 | 0 | 0 | 6 | 10 | 10 | 0 | 4 | 0 | 0 | 0 | 12 | 0 | 0.00 | 54.00 | 0.00 | 0.00 | 0.0 | 33.3 | 15.00 | .750 | 135.00 | 3053 | 21.15 | 480 | 81.00 | -1.2 |
| 10 |  | C. Fox | 135.00 | 0.1 | 2009 |  CHC | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 3098 | 30.09 | 705 | 54.00 | -0.9 | |
| 11 |  | J. Mabry | 135.00 | 0.1 | 2001 | TOT | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 3228 | 30.04 | 704 | 81.00 | -1 | |
| 12 | | M. Capel | 135.00 | 0.1 | 1990 |  MIL | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 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 | 3527 | 14.80 | 382 | 162.00 | -0.4 | |
| 13 |  | C. Dudley | 135.00 | 0.1 | 1933 |  PIT | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 4007 | 11.80 | 328 | 162.00 | -0.3 | ||
| 14 |  | P. Finlayson | 135.00 | 0.1 | 1908 |  BKN | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 5 | 0 | 4 | 0 | 0 | 5 | 0 | 0.00 | 108.00 | 0.00 | 0.00 | 0.0 | 80.0 | 12.00 | .000 | 135.00 | 6058 | 38.10 | 1608 | 0.00 | -1.4 | ||
| 15 | | J. Castillo | 108.00 | 0.1 | 2023 |  SDP | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 2569 | 30.25 | 698 | 54.00 | -1 | |
| 16 | | M. Mastrobuoni | 108.00 | 0.1 | 2023 | CHC | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 2543 | 42.25 | 985 | 108.00 | -1.4 | ||
| 17 |  | T. Hearn | 108.00 | 0.1 | 2019 |  TEX | 1 | 0 | 1 | .000 | 1 | 0 | 0 | 0 | 0 | 3 | 4 | 5 | 0 | 4 | 0 | 0 | 0 | 8 | 0 | 0.00 | 108.00 | 0.00 | 0.00 | 0.0 | 50.0 | 21.00 | .750 | 135.00 | 2152 | 39.20 | 826 | 81.00 | -1.2 |
| 18 |  | W. Cuevas | 108.00 | 0.1 | 2017 |  DET | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 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 | 2449 | 6.15 | 139 | 81.00 | -0.1 | ||
| 19 |  | D. Carpenter | 108.00 | 0.1 | 2013 |  LAA | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 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 | 2851 | 54.04 | 1407 | 54.00 | -1.9 | |
| 20 |  | G. Olson | 108.00 | 0.1 | 2012 |  NYM | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 2884 | 12.09 | 310 | 81.00 | -0.3 | |
| 21 |  | E. Gonzalez | 108.00 | 0.1 | 2005 |  ARI | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 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 | 2438 | 54.01 | 1235 | 54.00 | -1.8 | |
| 22 |  | J. Paniagua | 108.00 | 0.1 | 2003 |  CWS | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 2340 | 12.02 | 257 | 81.00 | -0.3 | |
| 23 | | B. Brewer | 108.00 | 0.1 | 1998 | PHI | 2 | 0 | 1 | .000 | 0 | 0 | 0 | 0 | 0 | 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 | 2528 | 21.13 | 496 | 81.00 | -0.6 |
| 24 | | F. Fisher | 108.00 | 0.1 | 1964 | DET | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 4 | 4 | 0 | 2 | 0 | 0 | 0 | 5 | 0 | 27.00 | 54.00 | 0.50 | 0.00 | 20.0 | 40.0 | 12.00 | 1.000 | 108.00 | 2892 | 14.60 | 376 | 54.00 | -0.4 | |
| 25 | | F. Wurm | 108.00 | 0.1 | 1944 |  BKN | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 4 | 4 | 0 | 5 | 0 | 0 | 7 | 0 | 27.00 | 135.00 | 0.20 | 0.00 | 14.3 | 71.4 | 18.00 | 1.000 | 108.00 | 2991 | 41.54 | 1147 | 27.00 | -1.4 | ||
Yankees 
Rays 
Blue Jays 
Red Sox 
Orioles 
KCR 
Guardians 
Mariners 
Brewers 
Giants 
STL 
ATL 
AZ 
CIN 
