Lefty Williams had a 0-3 record with an ERA of 6.23 and 7 strikeouts in 4 appearances in the postseason in his career.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | 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 | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | L. Williams | 1917 |  CWS | 1 | 0 | 0 | 0 | 9.00 | 3 | 0 | 0 | 0 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 27.00 | 0.00 | 0.00 | 50.0 | 0.0 | 2.00 | .667 | 9.00 | 18.00 | ||||||
| 2 | | L. Williams | 1919 | CWS | 3 | 0 | 3 | .000 | 3 | 6.06 | 4 | 1 | 0 | 0 | 16.1 | 12 | 11 | 12 | 0 | 8 | 0 | 0 | 0 | 66 | 0 | 2.20 | 4.41 | 0.50 | 0.00 | 6.1 | 12.1 | 1.22 | .222 | 6.61 | 6.61 | ||||
| Total | 4 | 0 | 3 | .000 | 3 | 6.23 | 7 | 1 | 0 | 0 | 17.1 | 14 | 12 | 13 | 0 | 8 | 0 | 0 | 0 | 72 | 0 | 3.63 | 4.15 | 0.88 | 0.00 | 9.7 | 11.1 | 1.27 | .246 | 6.75 | 7.27 |
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