Shane Smith has the best ERA by a rookie in starts in his first 12 games this season, with an ERA of 2.45.
| NAME | ERA | GS | SEASON | TM | G | W | L | W% | 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 |  | S. Smith | 2.45 | 12 | 2025 |  CWS | 12 | 2 | 3 | .400 | 60 | 0 | 0 | 0 | 62.1 | 46 | 17 | 24 | 4 | 25 | 7 | 0 | 0 | 262 | 5 | 8.66 | 3.61 | 2.40 | 0.58 | 22.9 | 9.5 | 1.14 | .253 | 3.47 | 6.64 |
| 2 |  | C. Patrick | 2.73 | 12 | 2025 |  MIL | 12 | 3 | 4 | .429 | 56 | 0 | 0 | 0 | 62.2 | 57 | 19 | 19 | 4 | 17 | 3 | 0 | 1 | 258 | 0 | 8.04 | 2.44 | 3.29 | 0.57 | 21.7 | 6.6 | 1.18 | .298 | 2.73 | 8.19 |
| 3 |  | T. Sugano | 3.04 | 12 | 2025 |  BAL | 12 | 5 | 3 | .625 | 40 | 0 | 0 | 0 | 71.0 | 63 | 24 | 24 | 12 | 11 | 2 | 0 | 0 | 281 | 1 | 5.07 | 1.39 | 3.64 | 1.52 | 14.2 | 3.9 | 1.04 | .236 | 3.04 | 7.99 |
| 4 |  | W. Warren | 5.19 | 12 | 2025 |  NYY | 12 | 3 | 3 | .500 | 69 | 0 | 0 | 0 | 52.0 | 50 | 30 | 32 | 5 | 24 | 1 | 0 | 0 | 232 | 2 | 11.94 | 4.15 | 2.88 | 0.87 | 29.7 | 10.3 | 1.42 | .338 | 5.54 | 8.65 |
StatMuse has game-level data for ERA and starts going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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