Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1964 | WAS | 1 | 1 | 0 | 0.0 | 0 | 0 | 0 | 2 | 0.0 | 39.6 |
| 1965 | WAS | 14 | 65 | 28 | 43.1 | 470 | 3 | 4 | 10 | 7.2 | 57.9 |
| 1966 | WAS | 14 | 5 | 0 | 0.0 | 0 | 0 | 1 | 1 | 0.0 | 0.0 |
| 1967 | CLE | 13 | 9 | 3 | 33.3 | 34 | 0 | 1 | 2 | 3.8 | 6.0 |
| 1968 | PIT | 13 | 304 | 148 | 48.7 | 1856 | 18 | 17 | 33 | 6.1 | 64.5 |
| 1969 | PIT | 12 | 209 | 97 | 46.4 | 1422 | 7 | 10 | 24 | 6.8 | 60.3 |
| 1970 | NYG | 14 | 12 | 9 | 75.0 | 87 | 0 | 0 | 1 | 7.2 | 94.8 |
| 1971 | ATL | 10 | 57 | 30 | 52.6 | 463 | 5 | 5 | 10 | 8.1 | 72.5 |
| 1973 | NE | 7 | 68 | 36 | 52.9 | 432 | 3 | 4 | 11 | 6.4 | 62.9 |
| 1974 | NE | 1 | 6 | 3 | 50.0 | 37 | 0 | 1 | 0 | 6.2 | 29.9 |