| Year | Team | G | GS | W | L | SV | CG | SHO | IP | H | R | ER | HR | BB | K | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1989 | 13 | 12 | 6 | 2 | 0 | 1 | 0 | 60 | 29 | 16 | 11 | 0 | 54 | 58 | 1.65 | 1.38 | |
| 1990 | 15 | 15 | 4 | 6 | 0 | 1 | 0 | 90.1 | 80 | 44 | 33 | 2 | 61 | 69 | 3.29 | 1.56 | |
| 1991 | 30 | 19 | 8 | 5 | 1 | 0 | 0 | 114.2 | 87 | 54 | 35 | 3 | 85 | 87 | 2.75 | 1.50 | |
| 1992 | 18 | 10 | 6 | 5 | 0 | 0 | 0 | 81.1 | 59 | 34 | 26 | 5 | 41 | 81 | 2.88 | 1.23 | |
| 1993 | 23 | 11 | 2 | 6 | 1 | 0 | 0 | 77.1 | 75 | 55 | 46 | 1 | 51 | 60 | 5.35 | 1.63 | |
| 1995 | 18 | 0 | 2 | 0 | 0 | 0 | 0 | 19.1 | 13 | 7 | 6 | 1 | 6 | 19 | 2.79 | .980 | |
| 1996 | 50 | 0 | 1 | 3 | 1 | 0 | 0 | 44.2 | 42 | 19 | 13 | 1 | 26 | 39 | 2.62 | 1.52 | |
| 1997 | 9 | 0 | 0 | 0 | 1 | 0 | 0 | 13.1 | 9 | 3 | 3 | 0 | 6 | 8 | 2.03 | 1.13 | |
| 1998 | 42 | 0 | 1 | 2 | 1 | 0 | 0 | 48.2 | 35 | 12 | 12 | 1 | 33 | 48 | 2.22 | 1.40 | |
| 1999 | 47 | 1 | 4 | 4 | 1 | 0 | 0 | 54.1 | 61 | 32 | 30 | 2 | 45 | 60 | 4.97 | 1.95 | |
| 2000 | Tigers | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 1 | 1 | 0 | 1 | 3 | 3.00 | .670 |
| 2000 | 9 | 0 | 2 | 0 | 0 | 0 | 0 | 17.1 | 7 | 3 | 1 | 0 | 8 | 19 | .520 | .870 | |
| 2001 | Tigers | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 10.2 | 7 | 8 | 8 | 0 | 13 | 11 | 6.75 | 1.88 |
| 2001 | 44 | 0 | 3 | 4 | 7 | 0 | 0 | 56 | 49 | 18 | 17 | 3 | 21 | 73 | 2.73 | 1.25 | |
| 2002 | 44 | 7 | 6 | 1 | 1 | 1 | 1 | 78 | 66 | 23 | 22 | 5 | 27 | 82 | 2.54 | 1.19 | |
| 2003 | Red Sox | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 5 | 5 | 4 | 1 | 2 | 3 | 9.00 | 1.75 |
| 2003 | 47 | 0 | 5 | 1 | 4 | 0 | 0 | 31.2 | 19 | 9 | 8 | 3 | 17 | 34 | 2.27 | 1.14 | |
| 2004 | 51 | 0 | 4 | 0 | 0 | 0 | 0 | 57.1 | 55 | 30 | 22 | 2 | 40 | 77 | 3.45 | 1.66 | |
| 2005 | 27 | 0 | 6 | 0 | 2 | 0 | 0 | 32.2 | 29 | 21 | 14 | 3 | 15 | 26 | 3.86 | 1.35 | |
| Career Total | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 17.2 | 13 | 14 | 13 | 1 | 16 | 17 | 6.62 | 1.64 | |
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