| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1992 | Boston Red Sox | 2 | 3 | 27 | 49.1 | 2.19 | 1.42 | 24 | 15 | 1 | 4.38 | 2.74 |
| 1993 |
| Boston Red Sox |
| 6 |
| 12 |
| 49 |
| 138.0 |
| 3.91 |
| 1.41 |
| 66 |
| 44 |
| 13 |
| 4.30 |
| 2.87 |
| 1994 | Boston Red Sox | 1 | 1 | 17 | 23.0 | 3.52 | 1.30 | 15 | 5 | 4 | 5.87 | 1.96 |
| 1994 | Philadelphia Phillies | 2 | 2 | 18 | 30.0 | 6.00 | 1.63 | 13 | 10 | 3 | 3.90 | 3.00 |
| 1994 | 3 | 3 | 35 | 53.0 | 4.92 | 1.49 | 28 | 15 | 7 | 4.75 | 2.55 |
| 1995 | Philadelphia Phillies | 11 | 12 | 33 | 179.1 | 4.67 | 1.43 | 103 | 44 | 20 | 5.17 | 2.21 |
| 1996 | Toronto Blue Jays | 5 | 14 | 38 | 134.1 | 5.43 | 1.66 | 86 | 51 | 27 | 5.76 | 3.42 |
| 1997 | Toronto Blue Jays | 6 | 7 | 77 | 88.0 | 1.94 | 1.36 | 56 | 17 | 5 | 5.73 | 1.74 |
| 1998 | Toronto Blue Jays | 3 | 4 | 82 | 80.0 | 2.59 | 1.38 | 59 | 22 | 5 | 6.64 | 2.48 |
| 1999 | Toronto Blue Jays | 3 | 2 | 41 | 48.2 | 3.33 | 1.44 | 28 | 17 | 5 | 5.18 | 3.14 |
| 2000 | Toronto Blue Jays | 2 | 5 | 68 | 83.2 | 4.52 | 1.49 | 47 | 25 | 7 | 5.06 | 2.69 |
| 2001 | Toronto Blue Jays | 11 | 2 | 80 | 83.0 | 3.04 | 1.18 | 58 | 12 | 6 | 6.29 | 1.30 |
| 2002 | Los Angeles Dodgers | 5 | 4 | 86 | 76.2 | 2.70 | 1.37 | 53 | 25 | 1 | 6.22 | 2.93 |
| 2003 | Los Angeles Dodgers | 2 | 5 | 89 | 77.1 | 1.75 | 0.98 | 44 | 15 | 2 | 5.12 | 1.75 |
| 2004 | New York Yankees | 7 | 3 | 86 | 95.1 | 4.72 | 1.51 | 37 | 20 | 5 | 3.49 | 1.89 |
| 2005 | New York Yankees | 1 | 0 | 22 | 32.0 | 6.75 | 1.72 | 11 | 7 | 5 | 3.09 | 1.97 |
| 2005 | San Diego Padres | 1 | 1 | 22 | 31.2 | 3.41 | 1.23 | 24 | 2 | 2 | 6.82 | 0.57 |
| 2005 | Florida Marlins | 0 | 1 | 6 | 5.1 | 8.44 | 2.44 | 1 | 5 | 1 | 1.69 | 8.44 |
| 2005 | 2 | 2 | 50 | 69.0 | 5.35 | 1.55 | 36 | 14 | 8 | 4.70 | 1.83 |
| Career | — | 68 | 78 | 841 | 1255.2 | 3.83 | 1.42 | 725 | 336 | 112 | 5.20 | 2.41 |
