| Year | Team | G | GS | W | L | SV | CG | SHO | IP | H | R | ER | HR | BB | K | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1994 | 26 | 17 | 9 | 9 | 0 | 8 | 1 | 181.1 | 174 | 67 | 64 | 12 | 42 | 110 | 3.18 | 1.19 | |
| 1995 | 27 | 20 | 7 | 13 | 0 | 7 | 2 | 196 | 185 | 73 | 65 | 19 | 50 | 118 | 2.98 | 1.20 | |
| 1996 | 30 | 24 | 11 | 14 | 0 | 6 | 1 | 195.1 | 204 | 97 | 87 | 14 | 51 | 145 | 4.01 | 1.31 | |
| 1997 | 29 | 22 | 10 | 12 | 0 | 4 | 1 | 183 | 172 | 79 | 73 | 23 | 62 | 111 | 3.59 | 1.28 | |
| 1998 | 24 | 21 | 11 | 10 | 0 | 3 | 2 | 164 | 159 | 74 | 64 | 11 | 51 | 90 | 3.51 | 1.28 | |
| 1999 | 28 | 23 | 6 | 16 | 0 | 4 | 2 | 173.1 | 175 | 80 | 76 | 16 | 57 | 95 | 3.95 | 1.34 | |
| 2000 | 25 | 23 | 6 | 10 | 0 | 1 | 1 | 151 | 162 | 76 | 70 | 19 | 30 | 95 | 4.17 | 1.27 | |
| 2001 | 17 | 8 | 0 | 4 | 0 | 0 | 0 | 55 | 55 | 32 | 25 | 2 | 33 | 26 | 4.09 | 1.60 | |
| 2002 | 20 | 15 | 10 | 6 | 0 | 5 | 2 | 131.2 | 118 | 48 | 46 | 14 | 30 | 97 | 3.14 | 1.12 | |
| 2003 | 23 | 15 | 8 | 3 | 0 | 0 | 0 | 97.2 | 97 | 50 | 43 | 13 | 27 | 67 | 3.96 | 1.27 | |
| 2004 | 19 | 18 | 6 | 9 | 0 | 1 | 1 | 116.1 | 108 | 44 | 39 | 8 | 36 | 75 | 3.02 | 1.24 | |
| 2005 | Athletics | 40 | 0 | 4 | 0 | 1 | 0 | 0 | 58 | 64 | 34 | 29 | 6 | 26 | 44 | 4.50 | 1.55 |
| 2008 | Giants | 60 | 0 | 3 | 6 | 0 | 0 | 0 | 68 | 63 | 33 | 27 | 3 | 32 | 48 | 3.57 | 1.40 |
| 2008 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 4 | 1 | 1 | 0 | 6 | 7 | 1.80 | 2.00 | |
| 2009 | 18 | 0 | 1 | 1 | 1 | 0 | 0 | 22 | 26 | 20 | 16 | 4 | 15 | 17 | 6.55 | 1.86 | |
| Career Total | 100 | 0 | 7 | 6 | 1 | 0 | 0 | 126 | 127 | 67 | 56 | 9 | 58 | 92 | 4.00 | 1.47 | |
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