Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | LAR | 1 | 6 | 2 | 33.3 | 25 | 0 | 1 | 2 | 4.2 | 7.6 |
| 1983 | LAR | 4 | 25 | 12 | 48.0 | 135 | 1 | 0 | 2 | 5.4 | 77.9 |
| 1984 | LAR | 14 | 284 | 143 | 50.4 | 2021 | 13 | 7 | 24 | 7.1 | 78.7 |
| 1985 | LAR | 5 | 38 | 16 | 42.1 | 214 | 0 | 1 | 6 | 5.6 | 49.7 |
| 1986 | SF | 10 | 200 | 119 | 59.5 | 1554 | 11 | 8 | 8 | 7.8 | 85.7 |
| 1987 | SEA | 13 | 33 | 23 | 69.7 | 396 | 5 | 1 | 3 | 12.0 | 137.1 |
| 1988 | SEA | 11 | 35 | 13 | 37.1 | 132 | 0 | 5 | 3 | 3.8 | 9.2 |
| 1991 | SEA | 14 | 295 | 151 | 51.2 | 1753 | 9 | 17 | 20 | 5.9 | 55.7 |