50 pitchers are tied for the lowest career ERA in the AL before the All-Star Game, with an ERA of 0.00. The first three are Tommy Nance, Luis Vázquez and Ian Seymour.
| NAME | ERA | 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 |  | T. Nance | 0.00 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2.0 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 8 | 0 | 9.00 | 4.50 | 2.00 | 0.00 | 25.0 | 12.5 | 1.00 | .200 | 4.50 | 4.50 | |
| 2 | | L. Vázquez | 0.00 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.1 | 3 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 11 | 0 | 0.00 | 2.70 | 0.00 | 0.00 | 0.0 | 9.1 | 1.20 | .300 | 0.00 | 8.10 | |
| 3 | | I. Seymour | 0.00 | 2 | 1 | 0 | 1.000 | 0 | 3 | 0 | 0 | 0 | 4.0 | 1 | 0 | 1 | 0 | 2 | 0 | 2 | 1 | 15 | 0 | 6.75 | 4.50 | 1.50 | 0.00 | 20.0 | 13.3 | 0.75 | .100 | 2.25 | 2.25 |
| 4 | | Y. Hiraldo | 0.00 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1.1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | 0 | 6.75 | 0.00 | 0.00 | 20.0 | 0.0 | 0.75 | .250 | 0.00 | 6.75 | ||
| 5 | | W. MacIver | 0.00 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.0 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 10 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 2.00 | .400 | 0.00 | 18.00 | ||
| 6 | | S. Lao | 0.00 | 1 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 1.2 | 3 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 8 | 0 | 16.20 | 0.00 | 0.00 | 37.5 | 0.0 | 1.80 | .600 | 5.40 | 16.20 | ||
| 7 | | T. Nido | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 6 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0.00 | ||
| 8 | | M. Mastrobuoni | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 6 | 0 | 0.00 | 18.00 | 0.00 | 0.00 | 0.0 | 33.3 | 3.00 | .250 | 0.00 | 9.00 | |
| 9 | | W. Pennington | 0.00 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 13.50 | 0.00 | 0.00 | 50.0 | 0.0 | 0.00 | .000 | 0.00 | 0.00 | ||
| 10 | | L. Guillorme | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0.00 | ||
| 11 | | J. Amaya | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0.00 | ||
| 12 | | D. Smith | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .250 | 0.00 | 9.00 | ||
| 13 | | P. Berroa | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0.00 | ||
| 14 | | C. Tucker | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 4 | 0 | 0.00 | 9.00 | 0.00 | 0.00 | 0.0 | 25.0 | 2.00 | .333 | 0.00 | 9.00 | |
| 15 | | Z. Kristofak | 0.00 | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2.0 | 3 | 0 | 2 | 0 | 2 | 0 | 1 | 0 | 11 | 0 | 9.00 | 9.00 | 1.00 | 0.00 | 18.2 | 18.2 | 2.50 | .429 | 9.00 | 13.50 | |
| 16 | | L. Rivas | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 3 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 6 | 0 | 0.00 | 9.00 | 0.00 | 0.00 | 0.0 | 16.7 | 4.00 | .600 | 0.00 | 27.00 | |
| 17 | | R. Henriquez | 0.00 | 2 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 3.0 | 2 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 12 | 0 | 9.00 | 3.00 | 3.00 | 0.00 | 25.0 | 8.3 | 1.00 | .250 | 0.00 | 6.00 | |
| 18 | | P. Strzelecki | 0.00 | 4 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 5.2 | 5 | 0 | 0 | 0 | 1 | 1 | 3 | 0 | 22 | 0 | 4.76 | 1.59 | 3.00 | 0.00 | 13.6 | 4.5 | 1.06 | .294 | 0.00 | 7.94 | |
| 19 | | J. Maciejewski | 0.00 | 3 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 4.0 | 1 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 14 | 0 | 11.25 | 2.25 | 5.00 | 0.00 | 35.7 | 7.1 | 0.50 | .125 | 0.00 | 2.25 | |
| 20 | | M. Díaz | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0.00 | ||
| 21 | | A. Knizner | 0.00 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.0 | 1 | 0 | 0 | 0 | 2 | 0 | 2 | 0 | 11 | 0 | 0.00 | 6.00 | 0.00 | 0.00 | 0.0 | 18.2 | 1.00 | .111 | 0.00 | 3.00 | |
| 22 | | N. Loftin | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .333 | 0.00 | 9.00 | ||
| 23 | | A. Felipe | 0.00 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2.0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 6 | 0 | 4.50 | 0.00 | 0.00 | 16.7 | 0.0 | 0.00 | .000 | 0.00 | 0.00 | ||
| 24 | | C. Vallimont | 0.00 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 13.50 | 0.00 | 0.00 | 50.0 | 0.0 | 1.50 | 1.000 | 0.00 | 13.50 | ||
| 25 | | C. Morris | 0.00 | 2 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 2.0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 13.50 | 0.00 | 0.00 | 42.9 | 0.0 | 1.00 | .500 | 0.00 | 9.00 | ||
StatMuse 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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