| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2004 | Chicago Cubs | 1 | 0 | 31 | 29.0 | 4.34 | 1.34 | 30 | 17 | 4 | 9.31 | 5.28 |
| 2005 |
| Chicago Cubs |
| 6 |
| 2 |
| 75 |
| 75.2 |
| 3.81 |
| 1.32 |
| 89 |
| 40 |
| 6 |
| 10.59 |
| 4.76 |
| 2006 | Chicago Cubs | 3 | 1 | 41 | 40.2 | 2.66 | 1.25 | 42 | 16 | 5 | 9.30 | 3.54 |
| 2007 | Chicago Cubs | 2 | 3 | 73 | 72.1 | 3.48 | 1.37 | 79 | 35 | 8 | 9.83 | 4.35 |
| 2008 | Chicago Cubs | 1 | 1 | 45 | 44.2 | 3.63 | 1.43 | 30 | 20 | 4 | 6.04 | 4.03 |
| 2009 | Oakland Athletics | 6 | 1 | 74 | 78.2 | 2.63 | 0.95 | 102 | 23 | 6 | 11.67 | 2.63 |
| 2010 | Oakland Athletics | 2 | 3 | 48 | 39.2 | 4.31 | 1.41 | 40 | 21 | 6 | 9.08 | 4.76 |
| 2011 | Oakland Athletics | 0 | 0 | 39 | 33.2 | 6.68 | 1.87 | 32 | 26 | 5 | 8.55 | 6.95 |
| Career | — | 21 | 11 | 426 | 414.1 | 3.71 | 1.32 | 444 | 198 | 44 | 9.64 | 4.30 |
