Regular season and playoffs
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1984 | HOU | 16 | 450 | 259 | 57.6 | 3338 | 12 | 14 | 47 | 7.4 | 76.9 |
| 1985 | HOU | 14 | 377 | 200 | 53.1 | 2709 | 15 | 19 | 46 | 7.2 | 68.5 |
| 1986 | HOU | 15 | 488 | 256 | 52.5 | 3489 | 13 | 26 | 41 | 7.1 | 62.3 |
| 1987 | HOU | 14 | 443 | 229 | 51.7 | 3343 | 23 | 21 | 27 | 7.5 | 74.2 |
| 1988 | HOU | 13 | 353 | 193 | 54.7 | 2780 | 18 | 12 | 15 | 7.9 | 83.3 |
| 1989 | HOU | 17 | 512 | 309 | 60.4 | 3946 | 25 | 14 | 35 | 7.7 | 89.4 |
| 1990 | HOU | 15 | 584 | 362 | 62.0 | 4689 | 33 | 13 | 36 | 8.0 | 96.8 |
| 1991 | HOU | 18 | 731 | 459 | 62.8 | 5286 | 28 | 23 | 27 | 7.2 | 84.2 |
| 1992 | HOU | 12 | 396 | 260 | 65.7 | 2892 | 22 | 14 | 20 | 7.3 | 91.0 |
| 1993 | HOU | 16 | 563 | 335 | 59.5 | 3791 | 22 | 22 | 43 | 6.7 | 76.5 |
| 1994 | MIN | 16 | 653 | 400 | 61.3 | 4556 | 20 | 21 | 31 | 7.0 | 79.0 |
| 1995 | MIN | 16 | 606 | 377 | 62.2 | 4228 | 33 | 14 | 38 | 7.0 | 91.5 |
| 1996 | MIN | 8 | 247 | 134 | 54.3 | 1610 | 7 | 9 | 19 | 6.5 | 68.7 |
| 1997 | SEA | 15 | 528 | 313 | 59.3 | 3678 | 25 | 16 | 30 | 7.0 | 83.7 |
| 1998 | SEA | 10 | 258 | 145 | 56.2 | 1632 | 11 | 8 | 22 | 6.3 | 76.6 |
| 1999 | KC | 1 | 3 | 1 | 33.3 | 20 | 0 | 0 | 0 | 6.7 | 57.6 |
| 2000 | KC | 2 | 34 | 15 | 44.1 | 208 | 1 | 1 | 5 | 6.1 | 61.9 |