| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1995 | Seattle Mariners | 0 | 2 | 19 | 19.1 | 7.91 | 2.22 | 26 | 23 | 6 | 12.10 | 10.71 |
| 1995 |
| San Diego Padres |
| 2 |
| 1 |
| 19 |
| 25.2 |
| 4.21 |
| 1.36 |
| 37 |
| 11 |
| 5 |
| 12.97 |
| 3.86 |
| 1995 | 2 | 3 | 38 | 45.0 | 5.80 | 1.73 | 63 | 34 | 11 | 12.60 | 6.80 |
| 1996 | San Diego Padres | 1 | 1 | 21 | 18.1 | 2.95 | 1.31 | 19 | 7 | 2 | 9.33 | 3.44 |
| 1996 | Milwaukee Brewers | 0 | 0 | 23 | 24.2 | 3.28 | 1.30 | 19 | 18 | 4 | 6.93 | 6.57 |
| 1996 | 1 | 1 | 44 | 43.0 | 3.14 | 1.30 | 38 | 25 | 6 | 7.95 | 5.23 |
| 1997 | Milwaukee Brewers | 1 | 0 | 50 | 52.2 | 3.42 | 1.71 | 40 | 36 | 4 | 6.84 | 6.15 |
| 1998 | Cleveland Indians | 0 | 0 | 25 | 27.0 | 6.00 | 1.93 | 15 | 22 | 3 | 5.00 | 7.33 |
| 1999 | Cincinnati Reds | 9 | 7 | 29 | 142.2 | 4.23 | 1.31 | 97 | 73 | 8 | 6.12 | 4.61 |
| 2000 | Cincinnati Reds | 10 | 10 | 35 | 141.0 | 5.43 | 1.65 | 77 | 78 | 22 | 4.91 | 4.98 |
| 2001 | Colorado Rockies | 1 | 3 | 22 | 46.2 | 6.36 | 1.82 | 48 | 29 | 6 | 9.26 | 5.59 |
| 2001 | Houston Astros | 5 | 7 | 31 | 68.0 | 5.56 | 1.49 | 65 | 24 | 12 | 8.60 | 3.18 |
| 2001 | 6 | 10 | 53 | 114.2 | 5.89 | 1.62 | 113 | 53 | 18 | 8.87 | 4.16 |
| 2002 | Pittsburgh Pirates | 4 | 6 | 45 | 93.0 | 5.81 | 1.39 | 55 | 34 | 8 | 5.32 | 3.29 |
| 2003 | Houston Astros | 6 | 6 | 19 | 106.2 | 4.13 | 1.30 | 91 | 48 | 16 | 7.68 | 4.05 |
| 2004 | Seattle Mariners | 8 | 6 | 56 | 117.0 | 4.08 | 1.42 | 86 | 64 | 12 | 6.62 | 4.92 |
| 2005 | Seattle Mariners | 2 | 3 | 52 | 40.1 | 2.45 | 1.39 | 41 | 23 | 2 | 9.15 | 5.13 |
| 2005 | Florida Marlins | 3 | 2 | 27 | 23.2 | 6.85 | 1.52 | 29 | 12 | 2 | 11.03 | 4.56 |
| 2005 | 5 | 5 | 79 | 64.0 | 4.08 | 1.44 | 70 | 35 | 4 | 9.84 | 4.92 |
| 2006 | New York Yankees | 3 | 3 | 70 | 80.1 | 5.04 | 1.57 | 72 | 51 | 9 | 8.07 | 5.71 |
| 2007 | New York Yankees | 0 | 0 | 37 | 42.1 | 4.25 | 1.28 | 25 | 18 | 5 | 5.31 | 3.83 |
| 2008 | St. Louis Cardinals | 1 | 2 | 74 | 50.0 | 4.68 | 1.64 | 50 | 37 | 4 | 9.00 | 6.66 |
| 2009 | Washington Nationals | 5 | 6 | 63 | 48.2 | 4.25 | 1.71 | 33 | 29 | 6 | 6.10 | 5.36 |
| Career | — | 61 | 65 | 717 | 1168.0 | 4.73 | 1.50 | 925 | 637 | 136 | 7.13 | 4.91 |
