| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1990 | Minnesota Twins | 0 | 5 | 7 | 34.2 | 5.97 | 1.88 | 25 | 28 | 0 | 6.49 | 7.27 |
| 1991 |
| Minnesota Twins |
| 3 |
| 1 |
| 15 |
| 47.1 |
| 4.75 |
| 1.56 |
| 43 |
| 36 |
| 5 |
| 8.18 |
| 6.85 |
| 1992 | Minnesota Twins | 0 | 0 | 6 | 11.0 | 3.27 | 1.55 | 13 | 5 | 1 | 10.64 | 4.09 |
| 1993 | Cleveland Indians | 0 | 1 | 5 | 18.1 | 6.38 | 1.64 | 7 | 11 | 5 | 3.44 | 5.40 |
| 1998 | Seattle Mariners | 3 | 1 | 4 | 24.2 | 4.01 | 1.38 | 22 | 10 | 2 | 8.03 | 3.65 |
| 1999 | Seattle Mariners | 6 | 2 | 25 | 72.2 | 3.10 | 1.13 | 68 | 32 | 9 | 8.42 | 3.96 |
| 2000 | Seattle Mariners | 9 | 7 | 35 | 179.0 | 4.22 | 1.36 | 100 | 80 | 23 | 5.03 | 4.02 |
| 2001 | Seattle Mariners | 17 | 4 | 28 | 163.0 | 4.25 | 1.42 | 118 | 87 | 21 | 6.52 | 4.80 |
| 2002 | Seattle Mariners | 1 | 3 | 7 | 26.1 | 11.96 | 2.28 | 22 | 20 | 5 | 7.52 | 6.84 |
| 2003 | Kansas City Royals | 1 | 2 | 10 | 47.2 | 5.29 | 1.53 | 32 | 26 | 8 | 6.04 | 4.91 |
| 2004 | Tampa Bay Devil Rays | 2 | 5 | 10 | 47.0 | 6.70 | 1.62 | 25 | 27 | 8 | 4.79 | 5.17 |
| 2004 | Philadelphia Phillies | 1 | 6 | 10 | 49.0 | 6.24 | 1.80 | 21 | 31 | 14 | 3.86 | 5.69 |
| 2004 | 3 | 11 | 20 | 96.0 | 6.47 | 1.71 | 46 | 58 | 22 | 4.31 | 5.44 |
| Career | — | 43 | 37 | 162 | 720.2 | 4.92 | 1.49 | 496 | 393 | 101 | 6.19 | 4.91 |
