Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1973 | OAK | 5 | 3 | 1 | 0 | 3.86 | 6 | 1 | 0 | 0 | 18.2 | 16 | 8 | 8 | 3 | 7 | 0 | 1.23 |
1974 | OAK | 19 | 17 | 5 | 7 | 3.00 | 38 | 3 | 0 | 0 | 96.0 | 89 | 32 | 38 | 4 | 34 | 3 | 1.28 |
1975 | OAK | 30 | 15 | 5 | 5 | 4.25 | 51 | 3 | 1 | 0 | 114.1 | 109 | 54 | 61 | 12 | 50 | 2 | 1.39 |
1976 | OAK | 19 | 10 | 2 | 4 | 5.49 | 27 | 0 | 0 | 0 | 62.1 | 87 | 38 | 41 | 6 | 16 | 1 | 1.65 |
1977 | SEA | 36 | 34 | 12 | 13 | 4.45 | 100 | 7 | 0 | 0 | 204.1 | 212 | 101 | 111 | 32 | 56 | 12 | 1.31 |
1978 | SEA | 29 | 28 | 7 | 15 | 5.27 | 67 | 8 | 1 | 0 | 155.1 | 191 | 91 | 99 | 22 | 44 | 2 | 1.51 |
1979 | SEA | 23 | 19 | 4 | 10 | 5.17 | 25 | 3 | 0 | 0 | 116.2 | 138 | 67 | 78 | 19 | 38 | 3 | 1.51 |
1980 | SEA | 31 | 31 | 12 | 12 | 4.10 | 78 | 7 | 2 | 0 | 215.0 | 228 | 98 | 110 | 27 | 49 | 3 | 1.29 |
1981 | SEA | 22 | 20 | 4 | 9 | 3.94 | 35 | 1 | 0 | 0 | 130.1 | 127 | 57 | 64 | 14 | 28 | 0 | 1.19 |
1983 | SEA | 14 | 14 | 5 | 3 | 4.59 | 38 | 2 | 0 | 0 | 82.1 | 103 | 42 | 46 | 9 | 15 | 4 | 1.43 |
1983 | DET | 7 | 7 | 2 | 1 | 1.93 | 11 | 1 | 1 | 0 | 46.2 | 43 | 10 | 12 | 5 | 7 | 0 | 1.07 |
1983 | TOT | 21 | 21 | 7 | 4 | 3.63 | 49 | 3 | 1 | 0 | 129.0 | 146 | 52 | 58 | 14 | 22 | 4 | 1.30 |
1984 | DET | 13 | 8 | 3 | 4 | 5.93 | 8 | 1 | 0 | 0 | 44.0 | 62 | 29 | 39 | 9 | 8 | 2 | 1.59 |
| Career | 248 | 206 | 62 | 83 | 4.39 | 484 | 37 | 5 | 0 | 1286.0 | 1,405 | 627 | 707 | 162 | 352 | 32 | 1.37 |
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DET 
Phillies 
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PIT 
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