Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1970 | BUF | 14 | 321 | 178 | 55.5 | 2507 | 10 | 20 | 41 | 7.8 | 65.3 |
| 1971 | BUF | 13 | 291 | 149 | 51.2 | 1813 | 11 | 26 | 33 | 6.2 | 46.1 |
| 1972 | BUF | 14 | 258 | 136 | 52.7 | 1666 | 14 | 17 | 38 | 6.5 | 63.5 |
| 1973 | BUF | 4 | 46 | 22 | 47.8 | 300 | 0 | 4 | 11 | 6.5 | 32.9 |
| 1975 | LAR | 3 | 8 | 4 | 50.0 | 61 | 0 | 1 | 1 | 7.6 | 35.9 |