Since 1920, Warren Spahn has the lowest ERA by a starting pitcher when pitching at least 5000 innings, with an ERA of 3.08.
| NAME | ERA | IP | 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 | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | W. Spahn | 3.08 | 5101.0 | 665 | 358 | 227 | .612 | 665 | 2,501 | 382 | 63 | 0 | 4,703 | 1,743 | 1,951 | 422 | 1,383 | 39 | 0 | 52 | 20,960 | 74 | 4.41 | 2.44 | 1.81 | 0.74 | 11.9 | 6.6 | 1.19 | .258 | 3.44 | 8.30 |
| 2 | | G. Perry | 3.10 | 5156.2 | 690 | 305 | 252 | .548 | 690 | 3,372 | 303 | 53 | 0 | 4,762 | 1,778 | 2,045 | 382 | 1,314 | 101 | 0 | 144 | 21,140 | 150 | 5.89 | 2.29 | 2.57 | 0.67 | 16.0 | 6.2 | 1.18 | .274 | 3.57 | 8.31 |
| 3 |  | G. Maddux | 3.15 | 5001.0 | 740 | 355 | 226 | .611 | 740 | 3,366 | 109 | 35 | 0 | 4,717 | 1,750 | 1,974 | 351 | 996 | 137 | 0 | 177 | 20,388 | 70 | 6.06 | 1.79 | 3.38 | 0.63 | 16.5 | 4.9 | 1.14 | .281 | 3.55 | 8.49 |
| 4 |  | N. Ryan | 3.18 | 5326.0 | 773 | 318 | 291 | .522 | 773 | 5,654 | 222 | 61 | 0 | 3,880 | 1,884 | 2,151 | 314 | 2,748 | 156 | 0 | 75 | 22,310 | 275 | 9.55 | 4.64 | 2.06 | 0.53 | 25.3 | 12.3 | 1.24 | .265 | 3.63 | 6.56 |
| 5 |  | S. Carlton | 3.20 | 5165.1 | 709 | 327 | 240 | .577 | 709 | 4,104 | 254 | 55 | 0 | 4,616 | 1,835 | 2,096 | 405 | 1,814 | 53 | 0 | 145 | 21,457 | 177 | 7.15 | 3.16 | 2.26 | 0.71 | 19.1 | 8.5 | 1.24 | .279 | 3.65 | 8.04 |
| 6 | | D. Sutton | 3.27 | 5248.1 | 756 | 321 | 253 | .559 | 756 | 3,545 | 178 | 58 | 0 | 4,670 | 1,905 | 2,095 | 469 | 1,333 | 81 | 0 | 96 | 21,500 | 110 | 6.08 | 2.29 | 2.66 | 0.80 | 16.5 | 6.2 | 1.14 | .261 | 3.59 | 8.01 |
| 7 | | P. Niekro | 3.37 | 5149.2 | 716 | 302 | 262 | .535 | 716 | 3,181 | 245 | 45 | 0 | 4,815 | 1,928 | 2,227 | 465 | 1,703 | 116 | 0 | 73 | 21,585 | 207 | 5.56 | 2.98 | 1.87 | 0.81 | 14.7 | 7.9 | 1.27 | .270 | 3.89 | 8.42 |
StatMuse has game-level data for ERA and innings pitched going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
Phillies
Mets
Marlins
Braves
Nationals
KCR
ATH
Brewers
Cubs
Dodgers
Padres
Blue Jays
Yankees
Guardians
Tigers
Mariners
Astros
CIN
STL
BOS
TBR
SFG
LAA
AZ
CWS
