Keith Foulke was 13-9 with an ERA of 3.73, 149 strikeouts and 47 saves in 159 appearances for the Red Sox 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 |  | K. Foulke | 2004 |  BOS | 72 | 5 | 3 | .625 | 0 | 2.17 | 79 | 0 | 0 | 32 | 83.0 | 63 | 20 | 22 | 8 | 15 | 6 | 61 | 5 | 333 | 3 | 8.57 | 1.63 | 5.27 | 0.87 | 23.7 | 4.5 | 0.94 | .244 | 2.39 | 46 | 3.15 | 72 | 6.83 | 11.6 |
| 2 | | K. Foulke | 2005 | BOS | 43 | 5 | 5 | .500 | 0 | 5.91 | 34 | 0 | 0 | 15 | 45.2 | 53 | 30 | 30 | 8 | 18 | 5 | 37 | 1 | 210 | 0 | 6.70 | 3.55 | 1.89 | 1.58 | 16.2 | 8.6 | 1.55 | .310 | 5.91 | 131 | 5.31 | 125 | 10.45 | -5.6 |
| 3 | | K. Foulke | 2006 | BOS | 44 | 3 | 1 | .750 | 0 | 4.35 | 36 | 0 | 0 | 0 | 49.2 | 52 | 24 | 24 | 9 | 7 | 2 | 16 | 0 | 205 | 2 | 6.52 | 1.27 | 5.14 | 1.63 | 17.6 | 3.4 | 1.19 | .285 | 4.35 | 93 | 4.59 | 104 | 9.42 | -1 |
| Total | 159 | 13 | 9 | .591 | 0 | 3.73 | 149 | 0 | 0 | 47 | 178.1 | 168 | 74 | 76 | 25 | 40 | 13 | 114 | 6 | 748 | 5 | 7.52 | 2.02 | 3.73 | 1.26 | 19.9 | 5.3 | 1.17 | .274 | 3.84 | 81 | 4.10 | 94 | 8.48 | 5 |
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