Regular season and playoffs
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1975 | NE | 13 | 274 | 139 | 50.7 | 1976 | 11 | 18 | 22 | 7.2 | 60.4 |
| 1976 | NE | 15 | 325 | 157 | 48.3 | 2070 | 19 | 21 | 18 | 6.4 | 61.4 |
| 1977 | NE | 14 | 305 | 160 | 52.5 | 2162 | 17 | 21 | 14 | 7.1 | 65.2 |
| 1978 | NE | 17 | 374 | 184 | 49.2 | 2862 | 15 | 25 | 22 | 7.7 | 60.5 |
| 1979 | NE | 16 | 423 | 206 | 48.7 | 3286 | 28 | 20 | 45 | 7.8 | 77.4 |
| 1980 | NE | 12 | 306 | 175 | 57.2 | 2475 | 18 | 22 | 17 | 8.1 | 73.1 |
| 1981 | NE | 8 | 216 | 117 | 54.2 | 1859 | 7 | 16 | 19 | 8.6 | 63.0 |
| 1982 | NE | 7 | 152 | 82 | 53.9 | 1119 | 8 | 6 | 12 | 7.4 | 78.8 |
| 1983 | NE | 12 | 303 | 168 | 55.4 | 2411 | 15 | 12 | 29 | 8.0 | 81.4 |
| 1984 | NE | 3 | 68 | 32 | 47.1 | 444 | 3 | 6 | 7 | 6.5 | 46.4 |
| 1985 | NE | 8 | 186 | 102 | 54.8 | 1488 | 8 | 7 | 15 | 8.0 | 79.8 |
| 1986 | NE | 4 | 102 | 62 | 60.8 | 976 | 9 | 2 | 4 | 9.6 | 113.8 |
| 1987 | NE | 7 | 161 | 93 | 57.8 | 1183 | 10 | 9 | 7 | 7.3 | 78.2 |
| 1988 | NE | 6 | 140 | 67 | 47.9 | 834 | 4 | 13 | 8 | 6.0 | 37.6 |
| 1989 | NE | 7 | 261 | 133 | 51.0 | 1697 | 9 | 14 | 8 | 6.5 | 60.8 |
| 1990 | NE | 4 | 92 | 50 | 54.3 | 615 | 4 | 3 | 9 | 6.7 | 76.1 |