| Date | Team | Opp | Result | Dec | GS | IP | AB | BF | H | R | ER | HR | BB | IBB | SO | HBP | SH | SF | WP | BK | ERA | WHIP | K/9 | BB/9 | FIP | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1997 | ||||||||||||||||||||||||||
| Season Total 2-3 | 0 | 56.0 | 41 | 29 | 14 | 0 | 17 | 57 | 2.25 | 1.04 | 9.16 | 2.73 | — | 142 | ||||||||||||
| 1998 | ||||||||||||||||||||||||||
| Season Total 4-3 | 0 | 48.0 | 32 | 21 | 18 | 0 | 33 | 43 | 3.38 | 1.35 | 8.06 | 6.19 | — | 108 |
| Year | Level | Team | Org | G | GS | IP | H | R | ER | BB | SO | HR | W | L | SV | ERA | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2000 | AA | Wichita | Kansas City Royals | 2 | 2 | 11.2 | 16 | 10 | 10 | 7 | 9 | 0 | 0 | 1 | 0 | 7.71 | 1.97 | 6.94 |
| 2001 | MLB | Kansas City Royals | Kansas City Royals | 3 | 3 | 15.1 | 18 | 10 | 8 | 4 | 7 | 2 | 1 | 1 | 0 | 4.70 | 1.43 | 4.11 |
| 2002 | AA | Wichita | Kansas City Royals | 4 | 4 | 17.2 | 11 | 12 | 6 | 24 | 14 | 1 | 1 | 1 | 0 | 3.06 | 1.98 | 7.13 |
| 2002 | MLB | Kansas City Royals | Kansas City Royals | 6 | 0 | 9.0 | 5 | 5 | 5 | 7 | 10 | 0 | 0 | 1 | 0 | 5.00 | 1.33 | 10.00 |
| 2003 | MLB | Kansas City Royals | Kansas City Royals | 68 | 0 | 64.0 | 64 | 36 | 29 | 32 | 57 | 4 | 3 | 5 | 27 | 4.08 | 1.50 | 8.02 |
| 2004 | AA | Wichita | Kansas City Royals | 17 | 2 | 18.1 | 14 | 7 | 3 | 14 | 13 | 0 | 1 | 0 | 1 | 1.47 | 1.53 | 6.38 |
| 2004 | MLB | Kansas City Royals | Kansas City Royals | 13 | 0 | 11.1 | 16 | 8 | 7 | 9 | 14 | 2 | 1 | 1 | 1 | 5.56 | 2.21 | 11.12 |
| 2005 | MLB | Kansas City Royals | Kansas City Royals | 68 | 0 | 70.1 | 69 | 32 | 26 | 24 | 72 | 6 | 5 | 6 | 21 | 3.33 | 1.32 | 9.21 |
| 2006 | AA | Wichita | Kansas City Royals | 1 | 1 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0.00 | — | 9.00 |
| 2006 | MLB | Chicago Cubs - Kansas City Royals | Chicago Cubs - Kansas City Royals | 29 | 0 | 29.0 | 21 | 5 | 5 | 6 | 21 | 1 | 1 | 1 | 1 | 1.55 | 0.93 | 6.52 |
| 2007 | MLB | Chicago Cubs | Chicago Cubs | 54 | 0 | 42.1 | 50 | 37 | 32 | 33 | 39 | 3 | 2 | 5 | 0 | 6.80 | 1.96 | 8.29 |
| 2008 | MLB | Chicago Cubs | Chicago Cubs | 16 | 0 | 17.0 | 16 | 4 | 4 | 12 | 12 | 0 | 0 | 0 | 0 | 2.12 | 1.65 | 6.35 |
| 2009 | MLB | Chicago Cubs - Washington Nationals | Chicago Cubs - Washington Nationals | 57 | 0 | 54.1 | 52 | 31 | 26 | 38 | 34 | 3 | 1 | 1 | 20 | 4.31 | 1.66 | 5.63 |
| 2010 | AA | Harrisburg | Washington Nationals | 8 | 0 | 7.1 | 11 | 6 | 6 | 5 | 4 | 0 | 2 | 1 | 1 | 7.36 | 2.18 | 4.91 |
| 2010 | AAA | Syracuse, Memphis | Washington Nationals, St. Louis Cardinals | 18 | 0 | 23.0 | 21 | 9 | 9 | 9 | 15 | 3 | 4 | 0 | 2 | 3.52 | 1.30 | 5.87 |
| 2010 | MLB | St. Louis Cardinals | St. Louis Cardinals | 17 | 0 | 18.2 | 23 | 15 | 15 | 12 | 14 | 1 | 1 | 1 | 0 | 7.23 | 1.88 | 6.75 |
| 2011 | MLB | Los Angeles | Los Angeles | 69 | 0 | 57.0 | 54 | 16 | 13 | 29 | 41 | 3 | 3 | 1 | 1 | 2.05 | 1.46 | 6.47 |
| 2012 | AAA | Iowa, Syracuse | Chicago Cubs, Washington Nationals | 31 | 0 | 29.0 | 40 | 23 | 21 | 24 | 25 | 4 | 2 | 3 | 3 | 6.52 | 2.21 | 7.76 |
| 2012 | MLB | Los Angeles | Los Angeles | 7 | 0 | 5.2 | 9 | 5 | 5 | 6 | 4 | 0 | 0 | 0 | 0 | 7.94 | 2.65 | 6.35 |
| 2013 | AAA | Louisville, Lehigh Valley | Cincinnati Reds, Philadelphia Phillies | 37 | 0 | 45.0 | 45 | 27 | 27 | 28 | 46 | 3 | 2 | 2 | 0 | 5.40 | 1.62 | 9.20 |
| 2014 | AAA | Tacoma | Seattle Mariners | 12 | 0 | 12.0 | 16 | 11 | 11 | 7 | 13 | 1 | 0 | 0 | 0 | 8.25 | 1.92 | 9.75 |
| 2001–2012 | MLB | Career (12 yrs) | 407 | 3 | 394.0 | 397 | 204 | 175 | 212 | 325 | 25 | 18 | 23 | 71 | 4.00 | 1.55 | 7.42 | |
| 2010–2014 | AAA | Career (4 yrs) | 98 | 0 | 109.0 | 122 | 70 | 68 | 68 | 99 | 11 | 8 | 5 | 5 | 5.61 | 1.74 | 8.17 | |
| 2000–2010 | AA | Career (5 yrs) | 32 | 9 | 56.0 | 52 | 35 | 25 | 50 | 41 | 1 | 4 | 3 | 2 | 4.02 | 1.82 | 6.59 |