Greg Maddux has the best career ERA when pitching at least 50 innings on June 15, with an ERA of 2.73.
| 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 |  | G. Maddux | 2.73 | 59.1 | 9 | 3 | 3 | .500 | 9 | 40 | 2 | 1 | 0 | 53 | 18 | 21 | 2 | 14 | 2 | 0 | 4 | 241 | 2 | 6.07 | 2.12 | 2.86 | 0.30 | 16.6 | 5.8 | 1.13 | .279 | 3.19 | 8.04 |
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.
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MIA 
Yankees 
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