Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1970 | CLE | 14 | 60 | 29 | 48.3 | 529 | 1 | 5 | 7 | 8.8 | 49.9 |
| 1971 | CLE | 14 | 47 | 13 | 27.7 | 179 | 1 | 4 | 0 | 3.8 | 14.6 |
| 1972 | CLE | 14 | 305 | 144 | 47.2 | 1994 | 13 | 16 | 23 | 6.5 | 61.0 |
| 1973 | CLE | 14 | 299 | 148 | 49.5 | 1719 | 9 | 20 | 44 | 5.7 | 49.4 |
| 1974 | CLE | 14 | 256 | 117 | 45.7 | 1384 | 9 | 17 | 33 | 5.4 | 46.7 |
| 1975 | CLE | 14 | 313 | 162 | 51.8 | 1749 | 4 | 19 | 28 | 5.6 | 47.5 |
| 1976 | CLE | 4 | 37 | 20 | 54.1 | 146 | 3 | 0 | 1 | 3.9 | 90.6 |
| 1977 | CHI | 3 | 5 | 3 | 60.0 | 5 | 0 | 0 | 3 | 1.0 | 64.6 |
| 1978 | CHI | 6 | 83 | 44 | 53.0 | 465 | 2 | 10 | 6 | 5.6 | 38.1 |
| 1979 | CHI | 12 | 255 | 134 | 52.5 | 1535 | 9 | 8 | 15 | 6.0 | 69.6 |
| 1980 | CHI | 7 | 122 | 61 | 50.0 | 630 | 2 | 9 | 7 | 5.2 | 40.0 |
| 1981 | CHI | 3 | 17 | 11 | 64.7 | 171 | 2 | 0 | 5 | 10.1 | 137.1 |