Regular season and playoffs
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1980 | SEA | 1 | 2 | 0 | 0.0 | 0 | 0 | 0 | 1 | 0.0 | 39.6 |
| 1981 | SEA | 7 | 112 | 64 | 57.1 | 843 | 7 | 5 | 11 | 7.5 | 83.3 |
| 1982 | SEA | 3 | 78 | 49 | 62.8 | 501 | 2 | 2 | 16 | 6.4 | 79.1 |
| 1983 | SEA | 12 | 293 | 177 | 60.4 | 2543 | 22 | 15 | 44 | 8.7 | 92.3 |
| 1984 | SEA | 18 | 525 | 300 | 57.1 | 3975 | 34 | 24 | 44 | 7.6 | 83.8 |
| 1985 | SEA | 16 | 532 | 285 | 53.6 | 3602 | 27 | 20 | 52 | 6.8 | 76.2 |
| 1986 | SEA | 15 | 375 | 225 | 60.0 | 2921 | 21 | 11 | 35 | 7.8 | 91.0 |
| 1987 | SEA | 13 | 332 | 194 | 58.4 | 2368 | 25 | 15 | 29 | 7.1 | 86.8 |
| 1988 | SEA | 10 | 278 | 158 | 56.8 | 2038 | 19 | 10 | 14 | 7.3 | 87.8 |
| 1989 | SEA | 15 | 499 | 286 | 57.3 | 3309 | 21 | 20 | 37 | 6.6 | 74.8 |
| 1990 | SEA | 16 | 448 | 265 | 59.2 | 3194 | 15 | 20 | 40 | 7.1 | 73.6 |
| 1991 | SEA | 10 | 285 | 187 | 65.6 | 2080 | 11 | 12 | 32 | 7.3 | 82.5 |
| 1992 | KC | 17 | 447 | 246 | 55.0 | 3348 | 15 | 14 | 55 | 7.5 | 77.3 |
| 1993 | KC | 15 | 219 | 122 | 55.7 | 1459 | 8 | 4 | 24 | 6.7 | 80.8 |
| 1994 | DET | 15 | 247 | 148 | 59.9 | 1828 | 15 | 3 | 18 | 7.4 | 98.0 |
| 1995 | ARI | 16 | 521 | 304 | 58.3 | 3554 | 16 | 21 | 53 | 6.8 | 72.6 |
| 1996 | CHI | 13 | 377 | 226 | 59.9 | 2278 | 14 | 12 | 14 | 6.0 | 76.3 |
| 1997 | TEN | 8 | 2 | 1 | 50.0 | 2 | 0 | 0 | 0 | 1.0 | 56.2 |
| 1998 | TEN | 5 | 21 | 12 | 57.1 | 199 | 0 | 0 | 2 | 9.5 | 89.2 |