Between the 1920 and 1950 seasons, Waite Hoyt had the lowest ERA with 25.0+ innings pitched in a postseason, with an ERA of 0.00 in 1921.
| 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 |  | W. Hoyt | 0.00 | 27.0 | 1921 |  NYY | 3 | 2 | 1 | .667 | 3 | 18 | 3 | 1 | 0 | 18 | 0 | 2 | 0 | 11 | 0 | 0 | 0 | 106 | 0 | 6.00 | 3.67 | 1.64 | 0.00 | 17.0 | 10.4 | 1.07 | .234 | 0.67 | 6.00 | ||||
| 2 | | S. Coveleski | 0.67 | 27.0 | 1920 |  CLE | 3 | 3 | 0 | 1.000 | 3 | 8 | 3 | 1 | 0 | 15 | 2 | 2 | 0 | 2 | 0 | 0 | 0 | 97 | 0 | 2.67 | 0.67 | 4.00 | 0.00 | 8.2 | 2.1 | 0.63 | .172 | 0.67 | 5.00 | ||||
| 3 | | G. Earnshaw | 0.72 | 25.0 | 1930 |  PHA | 3 | 2 | 0 | 1.000 | 3 | 19 | 2 | 0 | 0 | 13 | 2 | 2 | 1 | 7 | 0 | 0 | 1 | 95 | 0 | 6.84 | 2.52 | 2.71 | 0.36 | 20.0 | 7.4 | 0.80 | .176 | 0.72 | 4.68 | ||||
| 4 | | B. Newsom | 1.38 | 26.0 | 1940 |  DET | 3 | 2 | 1 | .667 | 3 | 17 | 3 | 1 | 0 | 18 | 4 | 4 | 0 | 4 | 0 | 0 | 1 | 97 | 0 | 5.88 | 1.38 | 4.25 | 0.00 | 17.5 | 4.1 | 0.85 | .237 | 1.38 | 6.23 | ||||
| 5 | | A. Nehf | 1.38 | 26.0 | 1921 |  NYG | 3 | 1 | 2 | .333 | 3 | 8 | 3 | 1 | 0 | 13 | 4 | 6 | 0 | 13 | 0 | 0 | 0 | 100 | 1 | 2.77 | 4.50 | 0.62 | 0.00 | 8.0 | 13.0 | 1.00 | .165 | 2.08 | 4.50 | ||||
| 6 | | D. Dean | 1.73 | 26.0 | 1934 |  SLN | 3 | 2 | 1 | .667 | 3 | 17 | 2 | 1 | 0 | 20 | 5 | 6 | 2 | 5 | 1 | 0 | 0 | 103 | 0 | 5.88 | 1.73 | 3.40 | 0.69 | 16.5 | 4.9 | 0.96 | .231 | 2.08 | 6.92 | ||||
| 7 | | C. Mays | 1.73 | 26.0 | 1921 | NYY | 3 | 1 | 2 | .333 | 3 | 9 | 3 | 1 | 0 | 20 | 5 | 6 | 0 | 0 | 1 | 0 | 0 | 97 | 0 | 3.12 | 0.00 | 0.00 | 9.3 | 0.0 | 0.77 | .230 | 2.08 | 6.92 | |||||
| 8 |  | W. Johnson | 2.08 | 26.0 | 1925 |  WSH | 3 | 2 | 1 | .667 | 3 | 15 | 3 | 1 | 0 | 26 | 6 | 10 | 1 | 4 | 2 | 0 | 0 | 106 | 0 | 5.19 | 1.38 | 3.75 | 0.35 | 14.2 | 3.8 | 1.15 | .298 | 3.46 | 9.00 | ||||
| 9 | | P. Douglas | 2.08 | 26.0 | 1921 | NYG | 3 | 2 | 1 | .667 | 3 | 17 | 2 | 0 | 0 | 20 | 6 | 6 | 1 | 5 | 0 | 0 | 0 | 97 | 1 | 5.88 | 1.73 | 3.40 | 0.35 | 17.5 | 5.2 | 0.96 | .257 | 2.08 | 6.92 | ||||
| 10 | | L. Grove | 2.42 | 26.0 | 1931 | PHA | 3 | 2 | 1 | .667 | 3 | 16 | 2 | 0 | 0 | 28 | 7 | 7 | 0 | 2 | 0 | 0 | 0 | 107 | 0 | 5.54 | 0.69 | 8.00 | 0.00 | 15.0 | 1.9 | 1.15 | .315 | 2.42 | 9.69 |
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