| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2002 | Chicago Cubs | 6 | 6 | 19 | 116.2 | 3.32 | 1.17 | 147 | 38 | 14 | 11.34 | 2.93 |
| 2003 |
| Chicago Cubs |
| 18 |
| 6 |
| 30 |
| 211.1 |
| 2.43 |
| 1.10 |
| 245 |
| 50 |
| 15 |
| 10.43 |
| 2.13 |
| 2004 | Chicago Cubs | 6 | 4 | 21 | 118.2 | 4.02 | 1.35 | 139 | 48 | 14 | 10.54 | 3.64 |
| 2005 | Chicago Cubs | 11 | 7 | 27 | 166.2 | 3.67 | 1.21 | 188 | 59 | 25 | 10.15 | 3.19 |
| 2006 | Chicago Cubs | 1 | 6 | 9 | 43.2 | 7.21 | 1.69 | 38 | 28 | 9 | 7.83 | 5.77 |
| Career | — | 42 | 29 | 106 | 657.0 | 3.51 | 1.23 | 757 | 223 | 77 | 10.37 | 3.05 |
