Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1982 | SEA | 28 | 27 | 7 | 14 | 5.36 | 73 | 1 | 1 | 0 | 144.1 | 159 | 86 | 91 | 21 | 79 | 2 | 1.65 |
1983 | SEA | 22 | 21 | 6 | 8 | 4.71 | 108 | 3 | 2 | 0 | 128.0 | 130 | 67 | 75 | 10 | 60 | 3 | 1.48 |
1984 | SEA | 34 | 33 | 7 | 17 | 4.97 | 158 | 6 | 0 | 0 | 212.0 | 236 | 117 | 127 | 16 | 85 | 5 | 1.51 |
1985 | SEA | 35 | 34 | 17 | 10 | 3.46 | 155 | 14 | 2 | 0 | 247.0 | 230 | 95 | 100 | 18 | 70 | 4 | 1.21 |
1986 | SEA | 38 | 37 | 11 | 13 | 4.30 | 146 | 11 | 1 | 1 | 266.0 | 279 | 127 | 141 | 28 | 94 | 12 | 1.40 |
1987 | SEA | 33 | 33 | 9 | 19 | 4.71 | 115 | 12 | 0 | 0 | 231.0 | 268 | 121 | 145 | 29 | 84 | 0 | 1.52 |
1988 | SEA | 37 | 32 | 9 | 15 | 3.78 | 182 | 9 | 3 | 1 | 228.2 | 196 | 96 | 104 | 24 | 63 | 3 | 1.13 |
1989 | OAK | 35 | 35 | 19 | 11 | 2.61 | 172 | 6 | 3 | 0 | 241.2 | 193 | 70 | 82 | 14 | 83 | 2 | 1.14 |
1990 | OAK | 33 | 33 | 13 | 15 | 4.65 | 73 | 3 | 0 | 0 | 199.1 | 204 | 103 | 113 | 14 | 84 | 3 | 1.44 |
1991 | OAK | 33 | 33 | 17 | 8 | 2.96 | 153 | 3 | 1 | 0 | 210.0 | 176 | 69 | 75 | 11 | 105 | 5 | 1.34 |
1992 | OAK | 36 | 36 | 17 | 12 | 4.12 | 117 | 2 | 0 | 0 | 223.0 | 229 | 102 | 113 | 20 | 103 | 8 | 1.49 |
1993 | DET | 36 | 36 | 13 | 9 | 5.22 | 89 | 4 | 3 | 0 | 213.2 | 227 | 124 | 135 | 35 | 89 | 3 | 1.48 |
1994 | DET | 25 | 25 | 11 | 10 | 5.42 | 62 | 4 | 0 | 0 | 154.1 | 152 | 93 | 97 | 27 | 89 | 3 | 1.56 |
1995 | DET | 25 | 25 | 5 | 15 | 7.53 | 64 | 1 | 0 | 0 | 132.2 | 179 | 111 | 118 | 24 | 68 | 2 | 1.86 |
| Career | 450 | 440 | 161 | 176 | 4.39 | 1,667 | 79 | 16 | 2 | 2831.2 | 2,858 | 1,381 | 1,516 | 291 | 1,156 | 55 | 1.42 |
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