| Year | Team | G | GS | W | L | SV | CG | SHO | IP | H | R | ER | HR | BB | K | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1996 | 13 | 11 | 2 | 4 | 0 | 0 | 0 | 47 | 35 | 30 | 26 | 4 | 38 | 31 | 4.98 | 1.55 | |
| 1997 | 16 | 16 | 7 | 3 | 0 | 0 | 0 | 80.1 | 87 | 55 | 46 | 10 | 32 | 67 | 5.15 | 1.48 | |
| 1998 | 29 | 27 | 11 | 12 | 0 | 0 | 0 | 168.1 | 62 | 89 | 63 | 14 | 61 | 164 | 3.37 | .730 | |
| 1999 | 27 | 27 | 11 | 10 | 0 | 0 | 0 | 156.1 | 160 | 96 | 89 | 17 | 68 | 150 | 5.12 | 1.46 | |
| 2000 | 26 | 26 | 5 | 8 | 0 | 1 | 0 | 135.1 | 167 | 106 | 87 | 18 | 63 | 114 | 5.79 | 1.70 | |
| 2001 | Giants | 10 | 7 | 1 | 2 | 0 | 0 | 0 | 42.1 | 44 | 21 | 20 | 5 | 25 | 26 | 4.25 | 1.63 |
| 2001 | 20 | 17 | 11 | 2 | 0 | 1 | 1 | 106 | 97 | 43 | 41 | 11 | 34 | 95 | 3.48 | 1.24 | |
| 2002 | Giants | 32 | 30 | 13 | 8 | 0 | 1 | 0 | 171.2 | 183 | 93 | 86 | 21 | 66 | 105 | 4.51 | 1.45 |
| 2003 | Giants | 6 | 2 | 0 | 0 | 0 | 0 | 0 | 13.1 | 21 | 16 | 16 | 6 | 5 | 3 | 10.80 | 1.95 |
| 2003 | 27 | 18 | 1 | 10 | 0 | 0 | 0 | 103.2 | 114 | 70 | 61 | 14 | 36 | 50 | 5.30 | 1.45 | |
| 2004 | 30 | 26 | 10 | 7 | 0 | 0 | 0 | 169.2 | 178 | 105 | 101 | 23 | 81 | 127 | 5.36 | 1.53 | |
| 2005 | Royals | 9 | 3 | 3 | 2 | 0 | 0 | 0 | 25.1 | 31 | 20 | 20 | 4 | 7 | 18 | 7.11 | 1.50 |
| 2005 | 18 | 18 | 2 | 11 | 0 | 0 | 0 | 90 | 123 | 80 | 72 | 12 | 38 | 55 | 7.20 | 1.79 | |
| 2006 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 1 | 1 | 0 | 1 | 0 | 4.50 | 1.50 | |
| Career Total | 57 | 42 | 17 | 12 | 0 | 1 | 0 | 252.2 | 279 | 150 | 142 | 36 | 103 | 152 | 5.06 | 1.51 | |
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