Regular season and playoffs
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1969 | CHI | 11 | 148 | 68 | 45.9 | 773 | 5 | 8 | 37 | 5.2 | 50.9 |
| 1970 | CHI | 3 | 30 | 12 | 40.0 | 218 | 4 | 3 | 7 | 7.3 | 65.7 |
| 1971 | CHI | 12 | 225 | 91 | 40.4 | 1164 | 5 | 15 | 30 | 5.2 | 37.0 |
| 1972 | CHI | 14 | 198 | 75 | 37.9 | 1246 | 9 | 12 | 32 | 6.3 | 49.8 |
| 1973 | CHI | 13 | 174 | 81 | 46.6 | 1057 | 5 | 7 | 27 | 6.1 | 59.0 |
| 1974 | CHI | 7 | 100 | 41 | 41.0 | 387 | 2 | 4 | 9 | 3.9 | 42.4 |
| 1975 | LAC | 4 | 47 | 15 | 31.9 | 140 | 0 | 3 | 6 | 3.0 | 14.6 |
| 1976 | NO | 11 | 213 | 103 | 48.4 | 1288 | 4 | 8 | 26 | 6.0 | 58.2 |
| 1977 | NO | 4 | 31 | 16 | 51.6 | 130 | 1 | 3 | 5 | 4.2 | 33.7 |
| 1978 | GB | 12 | 12 | 5 | 41.7 | 90 | 1 | 1 | 1 | 7.5 | 61.1 |