Roger Clemens had a record of 4-2 with an ERA of 4.39 and 29 strikeouts in 8 appearances for the Astros 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 |  | R. Clemens | 2004 |  HOU | 4 | 2 | 1 | .667 | 4 | 3.60 | 21 | 0 | 0 | 0 | 25.0 | 22 | 10 | 11 | 4 | 10 | 0 | 0 | 0 | 105 | 4 | 7.56 | 3.60 | 2.10 | 1.44 | 20.0 | 9.5 | 1.28 | .257 | 3.96 | 7.92 | ||||
| 2 | | R. Clemens | 2005 | HOU | 4 | 2 | 1 | .667 | 3 | 5.63 | 8 | 0 | 0 | 0 | 16.0 | 17 | 10 | 10 | 2 | 5 | 0 | 1 | 0 | 71 | 0 | 4.50 | 2.81 | 1.60 | 1.13 | 11.3 | 7.0 | 1.38 | .268 | 5.63 | 9.56 | ||||
| Total | 8 | 4 | 2 | .667 | 7 | 4.39 | 29 | 0 | 0 | 0 | 41.0 | 39 | 20 | 21 | 6 | 15 | 0 | 1 | 0 | 176 | 4 | 6.37 | 3.29 | 1.93 | 1.32 | 16.5 | 8.5 | 1.32 | .262 | 4.61 | 8.56 |
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