Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1985 | SEA | 23 | 21 | 6 | 10 | 4.77 | 55 | 0 | 0 | 0 | 120.2 | 131 | 64 | 71 | 8 | 48 | 5 | 1.48 |
1986 | SEA | 29 | 17 | 2 | 9 | 5.46 | 55 | 1 | 0 | 0 | 115.1 | 148 | 70 | 85 | 5 | 55 | 7 | 1.76 |
1988 | SEA | 38 | 24 | 8 | 12 | 4.59 | 47 | 6 | 1 | 0 | 174.2 | 199 | 89 | 99 | 10 | 65 | 8 | 1.51 |
1989 | SEA | 37 | 16 | 7 | 3 | 4.43 | 45 | 0 | 0 | 1 | 130.0 | 140 | 64 | 72 | 7 | 38 | 2 | 1.37 |
1990 | SEA | 55 | 8 | 6 | 4 | 2.39 | 42 | 0 | 0 | 6 | 128.0 | 135 | 34 | 46 | 4 | 21 | 7 | 1.22 |
1991 | SEA | 71 | 0 | 1 | 2 | 1.99 | 48 | 0 | 0 | 17 | 90.1 | 74 | 20 | 22 | 3 | 26 | 1 | 1.11 |
1992 | SFG | 30 | 22 | 10 | 4 | 2.08 | 77 | 3 | 2 | 1 | 164.2 | 144 | 38 | 41 | 6 | 43 | 3 | 1.14 |
1993 | SFG | 34 | 34 | 21 | 8 | 2.82 | 157 | 1 | 1 | 0 | 232.2 | 195 | 73 | 82 | 18 | 55 | 6 | 1.07 |
1994 | SFG | 17 | 17 | 8 | 7 | 3.38 | 62 | 0 | 0 | 0 | 109.1 | 109 | 41 | 49 | 10 | 31 | 1 | 1.28 |
1995 | COL | 19 | 19 | 9 | 3 | 4.94 | 68 | 0 | 0 | 0 | 105.2 | 122 | 58 | 62 | 12 | 43 | 1 | 1.56 |
1996 | COL | 7 | 3 | 1 | 1 | 5.40 | 5 | 0 | 0 | 2 | 18.1 | 23 | 11 | 12 | 1 | 5 | 0 | 1.53 |
1997 | COL | 14 | 13 | 4 | 6 | 6.34 | 29 | 0 | 0 | 0 | 65.1 | 85 | 46 | 57 | 11 | 26 | 2 | 1.70 |
1998 | SEA | 29 | 26 | 11 | 9 | 5.85 | 77 | 0 | 0 | 0 | 144.2 | 183 | 94 | 103 | 21 | 51 | 10 | 1.62 |
| Career | 403 | 220 | 94 | 78 | 3.95 | 767 | 11 | 4 | 27 | 1599.2 | 1,688 | 702 | 801 | 116 | 507 | 53 | 1.37 |
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