Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1977 | MIN | 6 | 57 | 30 | 52.6 | 425 | 5 | 4 | 6 | 7.5 | 77.0 |
| 1978 | MIN | 4 | 16 | 5 | 31.2 | 50 | 0 | 1 | 1 | 3.1 | 15.1 |
| 1979 | MIN | 16 | 566 | 315 | 55.7 | 3397 | 23 | 24 | 36 | 6.0 | 69.3 |
| 1980 | MIN | 15 | 522 | 299 | 57.3 | 3582 | 19 | 23 | 37 | 6.9 | 72.2 |
| 1981 | MIN | 14 | 593 | 322 | 54.3 | 3912 | 26 | 24 | 19 | 6.6 | 72.6 |
| 1982 | MIN | 9 | 308 | 176 | 57.1 | 2037 | 15 | 12 | 21 | 6.6 | 77.3 |
| 1983 | MIN | 3 | 82 | 55 | 67.1 | 550 | 3 | 4 | 3 | 6.7 | 77.8 |
| 1984 | MIN | 9 | 236 | 124 | 52.5 | 1678 | 9 | 10 | 24 | 7.1 | 70.6 |
| 1985 | MIN | 15 | 506 | 277 | 54.7 | 3522 | 19 | 26 | 39 | 7.0 | 67.8 |
| 1986 | MIN | 13 | 372 | 208 | 55.9 | 3000 | 24 | 10 | 31 | 8.1 | 92.6 |
| 1987 | MIN | 6 | 81 | 40 | 49.4 | 452 | 4 | 3 | 7 | 5.6 | 67.5 |
| 1988 | MIN | 10 | 173 | 83 | 48.0 | 1264 | 5 | 9 | 11 | 7.3 | 60.5 |
| 1989 | MIN | 8 | 136 | 77 | 56.6 | 906 | 7 | 7 | 12 | 6.7 | 72.7 |
| 1990 | NO | 1 | 3 | 1 | 33.3 | 2 | 0 | 1 | 2 | 0.7 | 2.8 |