Regular season
| 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 | 12 | 368 | 184 | 50.0 | 2806 | 21 | 18 | 25 | 7.6 | 74.2 |
| 1988 | HOU | 11 | 294 | 160 | 54.4 | 2327 | 17 | 8 | 12 | 7.9 | 88.4 |
| 1989 | HOU | 16 | 464 | 280 | 60.3 | 3631 | 23 | 14 | 35 | 7.8 | 88.9 |
| 1990 | HOU | 15 | 584 | 362 | 62.0 | 4689 | 33 | 13 | 36 | 8.0 | 96.8 |
| 1991 | HOU | 16 | 655 | 404 | 61.7 | 4690 | 23 | 21 | 23 | 7.2 | 81.7 |
| 1992 | HOU | 11 | 346 | 224 | 64.7 | 2521 | 18 | 12 | 16 | 7.3 | 89.3 |
| 1993 | HOU | 15 | 520 | 303 | 58.3 | 3485 | 21 | 21 | 34 | 6.7 | 75.2 |
| 1994 | MIN | 15 | 601 | 371 | 61.7 | 4264 | 18 | 19 | 29 | 7.1 | 79.9 |
| 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 |