| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1991 | San Francisco Giants | 0 | 2 | 7 | 33.0 | 3.82 | 1.03 | 13 | 7 | 4 | 3.55 | 1.91 |
| 1992 |
| San Francisco Giants |
| 2 |
| 3 |
| 13 |
| 30.0 |
| 5.40 |
| 1.60 |
| 15 |
| 16 |
| 3 |
| 4.50 |
| 4.80 |
| 1992 | Montreal Expos | 0 | 0 | 7 | 14.2 | 1.84 | 1.09 | 7 | 4 | 1 | 4.30 | 2.45 |
| 1992 | 2 | 3 | 20 | 44.2 | 4.23 | 1.43 | 22 | 20 | 4 | 4.43 | 4.03 |
| 1993 | Montreal Expos | 4 | 2 | 20 | 57.1 | 3.92 | 1.40 | 40 | 14 | 4 | 6.28 | 2.20 |
| 1994 | Montreal Expos | 6 | 3 | 39 | 75.1 | 3.46 | 1.30 | 62 | 13 | 7 | 7.41 | 1.55 |
| 1995 | Montreal Expos | 5 | 6 | 40 | 119.0 | 4.31 | 1.33 | 74 | 21 | 7 | 5.60 | 1.59 |
| 1996 | Texas Rangers | 2 | 5 | 44 | 73.1 | 5.89 | 1.43 | 43 | 14 | 12 | 5.28 | 1.72 |
| 1998 | Oakland Athletics | 3 | 3 | 8 | 42.2 | 2.74 | 1.08 | 27 | 3 | 4 | 5.70 | 0.63 |
| 1999 | Oakland Athletics | 13 | 8 | 33 | 200.1 | 4.81 | 1.31 | 117 | 34 | 22 | 5.26 | 1.53 |
| 2000 | Oakland Athletics | 15 | 11 | 32 | 198.2 | 4.12 | 1.41 | 101 | 66 | 24 | 4.58 | 2.99 |
| 2001 | Oakland Athletics | 7 | 8 | 24 | 109.2 | 5.58 | 1.58 | 48 | 29 | 27 | 3.94 | 2.38 |
| Career | — | 57 | 51 | 267 | 954.0 | 4.46 | 1.36 | 547 | 221 | 115 | 5.16 | 2.08 |
