Sport-specific career totals from the active profile tables, with VAL shown whenever the sport has a value file.
| Season | Age | Team | GP | G | GS | W | L | SV | IP | SO | BB | H | ER | HR | ERA | WHIP | VAL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1977 | 22 | BAL | 3 | 3 | 0 | 0 | 0 | 0 | 4.1 | 2 | 2 | 4 | 1 | 0 | 2.08 | 1.38 | — |
| 1978 | 23 | SEA | 27 | 27 | 10 | 1 | 5 | 1 | 82.1 | 41 | 32 | 108 | 47 | 8 | 5.14 | 1.70 | 2.1 |
| 1979 | 24 | SEA | 38 | 38 | 30 | 14 | 12 | 0 | 229.1 | 127 | 86 | 231 | 96 | 17 | 3.77 | 1.38 | 9.7 |
| 1980 | 25 | SEA | 27 | 27 | 16 | 1 | 16 | 3 | 94.0 | 53 | 42 | 136 | 76 | 16 | 7.28 | 1.89 | 0.2 |
| 1981 | 26 | SEA | 24 | 24 | 12 | 3 | 6 | 1 | 85.0 | 43 | 28 | 102 | 48 | 3 | 5.08 | 1.53 | 3.1 |