Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1976 | HOU | 28 | 25 | 9 | 10 | 3.60 | 59 | 9 | 4 | 0 | 172.1 | 163 | 69 | 74 | 8 | 75 | 1 | 1.38 |
1977 | HOU | 26 | 25 | 11 | 8 | 3.69 | 69 | 4 | 1 | 0 | 158.2 | 149 | 65 | 80 | 11 | 64 | 4 | 1.34 |
1978 | HOU | 35 | 13 | 5 | 7 | 3.42 | 55 | 2 | 0 | 1 | 110.2 | 88 | 42 | 45 | 3 | 58 | 4 | 1.32 |
1979 | HOU | 46 | 23 | 12 | 12 | 3.43 | 77 | 8 | 0 | 4 | 194.0 | 168 | 74 | 86 | 7 | 88 | 2 | 1.32 |
1980 | HOU | 35 | 14 | 3 | 8 | 3.91 | 75 | 0 | 0 | 2 | 122.0 | 132 | 53 | 59 | 8 | 43 | 0 | 1.43 |
1981 | HOU | 9 | 3 | 2 | 3 | 4.94 | 18 | 0 | 0 | 0 | 23.2 | 29 | 13 | 17 | 2 | 12 | 0 | 1.73 |
1981 | STL | 11 | 8 | 6 | 1 | 3.74 | 19 | 1 | 0 | 0 | 55.1 | 56 | 23 | 24 | 4 | 11 | 0 | 1.21 |
1981 | TOT | 20 | 11 | 8 | 4 | 4.10 | 37 | 1 | 0 | 0 | 79.0 | 85 | 36 | 41 | 6 | 23 | 0 | 1.37 |
1982 | STL | 38 | 37 | 15 | 10 | 2.47 | 137 | 9 | 5 | 0 | 265.2 | 237 | 73 | 85 | 11 | 50 | 7 | 1.08 |
1983 | STL | 39 | 34 | 6 | 16 | 4.16 | 125 | 5 | 2 | 1 | 225.0 | 215 | 104 | 112 | 23 | 75 | 3 | 1.29 |
1984 | STL | 36 | 36 | 20 | 14 | 3.34 | 147 | 12 | 4 | 0 | 261.1 | 218 | 97 | 104 | 20 | 70 | 7 | 1.10 |
1985 | STL | 38 | 38 | 21 | 12 | 3.40 | 112 | 10 | 2 | 0 | 269.2 | 265 | 102 | 113 | 15 | 82 | 11 | 1.29 |
1986 | OAK | 28 | 26 | 12 | 7 | 3.82 | 72 | 7 | 1 | 1 | 155.1 | 139 | 66 | 70 | 23 | 56 | 4 | 1.26 |
1987 | OAK | 13 | 13 | 3 | 5 | 6.08 | 32 | 1 | 0 | 0 | 60.2 | 63 | 41 | 43 | 11 | 26 | 3 | 1.47 |
1988 | HOU | 23 | 10 | 2 | 5 | 4.00 | 35 | 0 | 0 | 0 | 78.2 | 94 | 35 | 43 | 9 | 21 | 5 | 1.46 |
| Career | 405 | 305 | 127 | 118 | 3.58 | 1,032 | 68 | 19 | 9 | 2153.0 | 2,016 | 857 | 955 | 155 | 731 | 51 | 1.28 |
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