Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1991 | HOU | 37 | 22 | 7 | 11 | 3.69 | 100 | 0 | 0 | 0 | 153.2 | 144 | 63 | 81 | 16 | 84 | 6 | 1.48 |
1992 | HOU | 22 | 22 | 5 | 10 | 3.95 | 90 | 2 | 0 | 0 | 125.1 | 124 | 55 | 61 | 8 | 63 | 4 | 1.49 |
1993 | HOU | 32 | 26 | 15 | 8 | 3.51 | 141 | 4 | 2 | 0 | 171.2 | 152 | 67 | 73 | 12 | 69 | 15 | 1.29 |
1994 | HOU | 24 | 24 | 9 | 6 | 4.57 | 105 | 0 | 0 | 0 | 147.2 | 153 | 75 | 84 | 13 | 82 | 9 | 1.59 |
1995 | HOU | 25 | 21 | 4 | 12 | 4.96 | 113 | 0 | 0 | 0 | 127.0 | 114 | 70 | 81 | 5 | 73 | 12 | 1.47 |
1996 | HOU | 35 | 33 | 12 | 11 | 4.19 | 219 | 4 | 0 | 0 | 219.0 | 233 | 102 | 113 | 16 | 97 | 16 | 1.51 |
1997 | HOU | 34 | 34 | 19 | 7 | 2.57 | 205 | 6 | 4 | 0 | 255.2 | 208 | 73 | 87 | 19 | 94 | 10 | 1.18 |
1998 | COL | 36 | 35 | 13 | 17 | 5.20 | 158 | 4 | 1 | 0 | 230.1 | 257 | 133 | 141 | 28 | 96 | 7 | 1.53 |
1999 | COL | 32 | 32 | 8 | 13 | 6.61 | 116 | 1 | 0 | 0 | 190.2 | 225 | 140 | 150 | 33 | 109 | 6 | 1.75 |
2000 | STL | 34 | 34 | 20 | 9 | 3.91 | 192 | 5 | 1 | 0 | 232.1 | 215 | 101 | 109 | 33 | 58 | 13 | 1.18 |
2001 | STL | 34 | 34 | 16 | 11 | 3.09 | 179 | 2 | 1 | 0 | 227.1 | 228 | 78 | 83 | 22 | 65 | 11 | 1.29 |
2002 | STL | 14 | 14 | 5 | 4 | 3.72 | 50 | 0 | 0 | 0 | 84.2 | 82 | 35 | 36 | 9 | 28 | 8 | 1.30 |
| Career | 359 | 331 | 133 | 119 | 4.12 | 1,668 | 28 | 9 | 0 | 2165.1 | 2,135 | 992 | 1,099 | 214 | 918 | 117 | 1.41 |
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