Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1976 | SFG | 4 | 4 | 1 | 2 | 3.24 | 11 | 0 | 0 | 0 | 25.0 | 26 | 9 | 9 | 0 | 7 | 0 | 1.32 |
1977 | SFG | 27 | 27 | 11 | 9 | 3.36 | 100 | 6 | 2 | 0 | 166.0 | 151 | 62 | 73 | 14 | 72 | 3 | 1.34 |
1978 | SFG | 36 | 35 | 17 | 11 | 2.63 | 147 | 16 | 6 | 0 | 260.0 | 218 | 76 | 85 | 10 | 85 | 4 | 1.17 |
1979 | SFG | 34 | 34 | 9 | 12 | 4.64 | 123 | 6 | 2 | 0 | 207.1 | 241 | 107 | 117 | 30 | 77 | 3 | 1.53 |
1980 | SFG | 35 | 33 | 9 | 16 | 4.10 | 103 | 8 | 1 | 0 | 215.1 | 242 | 98 | 114 | 15 | 61 | 8 | 1.41 |
1981 | HOU | 22 | 22 | 9 | 5 | 2.18 | 75 | 6 | 5 | 0 | 156.2 | 128 | 38 | 41 | 5 | 38 | 4 | 1.06 |
1982 | HOU | 33 | 29 | 5 | 15 | 4.45 | 108 | 4 | 0 | 1 | 180.0 | 193 | 89 | 100 | 14 | 60 | 3 | 1.41 |
1983 | HOU | 35 | 29 | 6 | 13 | 3.19 | 125 | 4 | 3 | 0 | 203.0 | 202 | 72 | 93 | 12 | 71 | 4 | 1.34 |
1984 | HOU | 35 | 34 | 15 | 10 | 3.20 | 140 | 11 | 3 | 0 | 233.2 | 223 | 83 | 93 | 26 | 55 | 1 | 1.19 |
1985 | HOU | 37 | 37 | 15 | 13 | 3.55 | 131 | 4 | 0 | 0 | 241.0 | 253 | 95 | 119 | 21 | 54 | 3 | 1.27 |
1986 | HOU | 40 | 38 | 17 | 12 | 3.14 | 143 | 8 | 5 | 0 | 258.0 | 232 | 90 | 100 | 19 | 62 | 4 | 1.14 |
1987 | HOU | 33 | 31 | 8 | 17 | 5.27 | 76 | 1 | 0 | 0 | 177.2 | 226 | 104 | 118 | 26 | 54 | 4 | 1.58 |
1988 | HOU | 27 | 27 | 14 | 5 | 3.14 | 103 | 3 | 2 | 0 | 175.0 | 156 | 61 | 70 | 13 | 67 | 2 | 1.27 |
1989 | HOU | 22 | 20 | 4 | 10 | 5.89 | 45 | 0 | 0 | 0 | 113.0 | 135 | 74 | 78 | 12 | 60 | 2 | 1.73 |
1989 | SFG | 13 | 6 | 3 | 2 | 3.46 | 19 | 1 | 1 | 0 | 52.0 | 55 | 20 | 20 | 4 | 15 | 1 | 1.35 |
1989 | TOT | 35 | 26 | 7 | 12 | 5.13 | 64 | 1 | 1 | 0 | 165.0 | 190 | 94 | 98 | 16 | 75 | 3 | 1.61 |
1990 | SFG | 12 | 7 | 3 | 3 | 5.68 | 24 | 0 | 0 | 0 | 44.1 | 56 | 28 | 28 | 7 | 19 | 1 | 1.69 |
| Career | 445 | 413 | 146 | 155 | 3.68 | 1,473 | 78 | 30 | 1 | 2708.0 | 2,737 | 1,106 | 1,258 | 228 | 857 | 47 | 1.33 |
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