Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1977 | DET | 28 | 28 | 15 | 7 | 3.09 | 92 | 16 | 1 | 0 | 218.1 | 222 | 75 | 87 | 25 | 34 | 7 | 1.17 |
1978 | DET | 28 | 28 | 9 | 12 | 3.14 | 57 | 11 | 2 | 0 | 209.1 | 205 | 73 | 83 | 17 | 41 | 2 | 1.18 |
1979 | DET | 16 | 16 | 4 | 4 | 3.51 | 33 | 4 | 1 | 0 | 97.1 | 101 | 38 | 52 | 12 | 30 | 6 | 1.35 |
1980 | DET | 42 | 13 | 6 | 9 | 3.92 | 49 | 2 | 1 | 4 | 144.2 | 152 | 63 | 68 | 11 | 49 | 5 | 1.39 |
1981 | DET | 28 | 9 | 5 | 5 | 3.63 | 46 | 2 | 2 | 3 | 104.0 | 99 | 42 | 42 | 12 | 25 | 3 | 1.19 |
1982 | DET | 8 | 2 | 3 | 0 | 1.63 | 15 | 0 | 0 | 1 | 27.2 | 17 | 5 | 5 | 2 | 7 | 1 | 0.87 |
1983 | DET | 29 | 16 | 8 | 3 | 3.43 | 63 | 1 | 0 | 2 | 105.0 | 100 | 40 | 50 | 10 | 29 | 1 | 1.23 |
1984 | DET | 29 | 16 | 7 | 6 | 3.74 | 48 | 0 | 0 | 0 | 101.0 | 110 | 42 | 49 | 13 | 18 | 2 | 1.27 |
1985 | TEX | 34 | 4 | 3 | 7 | 4.19 | 42 | 0 | 0 | 7 | 88.0 | 100 | 41 | 45 | 10 | 22 | 2 | 1.39 |
1986 | TEX | 6 | 0 | 0 | 0 | 5.91 | 3 | 0 | 0 | 0 | 10.2 | 19 | 7 | 9 | 1 | 3 | 0 | 2.06 |
| Career | 248 | 132 | 60 | 53 | 3.47 | 448 | 36 | 7 | 17 | 1106.0 | 1,125 | 426 | 490 | 113 | 258 | 29 | 1.25 |
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