| Year | Team | G | GS | IP |
K |
HR9 |
ERA |
WHIP |
| 1997 | ATL | 12 | 8 | 51.1 | 42 | 0.17532 | 4.03247 | 1.48052 |
| 1998 | ATL | 31 | 29 | 174.1 | 163 | 0.92925 | 4.07839 | 1.32505 |
| 1999 | ATL | 33 | 33 | 228.0 | 205 | 0.94737 | 2.68421 | 0.99561 |
| 2000 | ATL | 36 | 35 | 212.2 | 168 | 1.10031 | 4.65517 | 1.29310 |
| 2001 | ATL | 21 | 21 | 121.0 | 84 | 1.48760 | 4.31405 | 1.33058 |
| 2002 | ATL | 35 | 34 | 217.0 | 178 | 0.66359 | 3.23502 | 1.15668 |
| 2003 | PHI | 35 | 35 | 222.0 | 169 | 0.77027 | 4.01351 | 1.25225 |
| 2004 | PHI | 25 | 25 | 141.0 | 125 | 0.89362 | 4.85106 | 1.46099 |
| 2005 | CLE | 30 | 30 | 192.0 | 146 | 0.93750 | 2.85938 | 1.21875 |
| 2006 | TEX | 34 | 34 | 215.0 | 157 | 0.96279 | 4.52093 | 1.30698 |
| 2007 | TEX | 31 | 31 | 172.2 | 123 | 0.99035 | 5.16023 | 1.62162 |
| 2008 | TEX | 29 | 29 | 168.2 | 125 | 0.96047 | 5.06917 | 1.59486 |
| 2009 | TEX | 31 | 31 | 198.2 | 123 | 1.17785 | 3.66946 | 1.33893 |
| 2010 | BAL | 31 | 31 | 190.2 | 132 | 1.41608 | 5.09790 | 1.51049 |
| 2011 | COL | 9 | 9 | 54.1 | 36 | 1.49080 | 3.97546 | 1.21472 |
| 2012 | SEA | 28 | 28 | 161.0 | 107 | 0.72671 | 4.24845 | 1.39130 |
| Year | Team | G | GS | IP |
K |
HR9 |
ERA |
WHIP |
| 2007 | TEX (AA) | 1 | 1 | 5.0 | 3 | 0.00000 | 0.00000 | 0.40000 |
| 2008 | TEX (AA) | 1 | 1 | 4.0 | 6 | 0.00000 | 2.25000 | 1.75000 |
| 2011 | NYY (AA) | 1 | 1 | 7.0 | 3 | 0.00000 | 0.00000 | 0.71429 |
| 2011 | NYY (AAA) | 2 | 2 | 9.0 | 7 | 3.00000 | 8.00000 | 1.77778 |
| 2011 | BOS (AAA) | 13 | 13 | 73.2 | 66 | 0.85520 | 4.27602 | 1.41176 |
| Year | Team | G | GS | IP |
K |
HR9 |
ERA |
WHIP |
| 2006 | TEX (ST) | 2 | 2 | 9.0 | 8 | 1.00000 | 6.00000 | 1.44444 |
| 2007 | TEX (ST) | 2 | 2 | 8.2 | 6 | 1.03846 | 9.34615 | 2.19231 |
| 2008 | TEX (ST) | 1 | 1 | 5.0 | 5 | 0.00000 | 0.00000 | 0.80000 |
| 2009 | TEX (ST) | 6 | 6 | 25.0 | 19 | 1.44000 | 6.48000 | 1.52000 |
| 2010 | BAL (ST) | 3 | 3 | 8.1 | 8 | 3.24000 | 12.96000 | 3.12000 |
| 2012 | SEA (ST) | 5 | 4 | 21.0 | 20 | 1.28571 | 2.57143 | 1.04762 |