Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1993 | NE | 13 | 429 | 214 | 49.9 | 2494 | 15 | 15 | 16 | 5.8 | 65.0 |
| 1994 | NE | 16 | 691 | 400 | 57.9 | 4555 | 25 | 27 | 22 | 6.6 | 73.6 |
| 1995 | NE | 15 | 636 | 323 | 50.8 | 3507 | 13 | 16 | 23 | 5.5 | 63.7 |
| 1996 | NE | 16 | 623 | 373 | 59.9 | 4086 | 27 | 15 | 30 | 6.6 | 83.7 |
| 1997 | NE | 16 | 522 | 314 | 60.2 | 3706 | 28 | 15 | 30 | 7.1 | 87.7 |
| 1998 | NE | 14 | 481 | 263 | 54.7 | 3633 | 20 | 14 | 36 | 7.6 | 80.9 |
| 1999 | NE | 16 | 539 | 305 | 56.6 | 3985 | 19 | 21 | 55 | 7.4 | 75.6 |
| 2000 | NE | 16 | 531 | 312 | 58.8 | 3291 | 17 | 13 | 45 | 6.2 | 77.3 |
| 2001 | NE | 2 | 66 | 40 | 60.6 | 400 | 2 | 2 | 5 | 6.1 | 75.3 |
| 2002 | BUF | 16 | 610 | 375 | 61.5 | 4359 | 24 | 15 | 54 | 7.1 | 86.0 |
| 2003 | BUF | 16 | 471 | 274 | 58.2 | 2860 | 11 | 12 | 49 | 6.1 | 73.0 |
| 2004 | BUF | 16 | 449 | 256 | 57.0 | 2932 | 20 | 16 | 38 | 6.5 | 76.8 |
| 2005 | DAL | 16 | 499 | 300 | 60.1 | 3639 | 23 | 17 | 49 | 7.3 | 83.7 |
| 2006 | DAL | 6 | 169 | 90 | 53.3 | 1164 | 7 | 8 | 16 | 6.9 | 69.2 |