Regular season and playoffs
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1985 | TB | 5 | 138 | 72 | 52.2 | 935 | 3 | 8 | 21 | 6.8 | 56.9 |
| 1986 | TB | 14 | 363 | 195 | 53.7 | 2282 | 8 | 13 | 47 | 6.3 | 65.5 |
| 1987 | SF | 9 | 86 | 49 | 57.0 | 728 | 11 | 1 | 3 | 8.5 | 119.6 |
| 1988 | SF | 13 | 102 | 55 | 53.9 | 679 | 3 | 3 | 13 | 6.7 | 72.3 |
| 1989 | SF | 13 | 97 | 67 | 69.1 | 1027 | 8 | 3 | 12 | 10.6 | 118.4 |
| 1990 | SF | 8 | 63 | 39 | 61.9 | 452 | 2 | 0 | 8 | 7.2 | 94.1 |
| 1991 | SF | 11 | 279 | 180 | 64.5 | 2517 | 17 | 8 | 13 | 9.0 | 101.8 |
| 1992 | SF | 18 | 467 | 313 | 67.0 | 4005 | 28 | 10 | 34 | 8.6 | 104.7 |
| 1993 | SF | 18 | 529 | 358 | 67.7 | 4536 | 30 | 17 | 36 | 8.6 | 99.7 |
| 1994 | SF | 19 | 548 | 377 | 68.8 | 4592 | 44 | 10 | 35 | 8.4 | 113.5 |
| 1995 | SF | 12 | 512 | 331 | 64.6 | 3528 | 20 | 13 | 28 | 6.9 | 87.1 |
| 1996 | SF | 14 | 342 | 230 | 67.3 | 2579 | 15 | 6 | 35 | 7.5 | 96.9 |
| 1997 | SF | 17 | 424 | 285 | 67.2 | 3503 | 20 | 7 | 40 | 8.3 | 101.4 |
| 1998 | SF | 17 | 586 | 363 | 61.9 | 4641 | 40 | 17 | 51 | 7.9 | 97.4 |
| 1999 | SF | 3 | 84 | 45 | 53.6 | 446 | 3 | 4 | 8 | 5.3 | 60.9 |