Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1965 | DAL | 4 | 34 | 17 | 50.0 | 173 | 2 | 4 | 10 | 5.1 | 45.0 |
| 1966 | DAL | 6 | 27 | 13 | 48.1 | 225 | 3 | 1 | 1 | 8.3 | 98.5 |
| 1967 | DAL | 9 | 137 | 69 | 50.4 | 978 | 10 | 10 | 17 | 7.1 | 67.7 |
| 1968 | DAL | 13 | 85 | 44 | 51.8 | 752 | 4 | 6 | 4 | 8.8 | 68.4 |
| 1969 | DAL | 13 | 302 | 162 | 53.6 | 2619 | 21 | 15 | 30 | 8.7 | 85.4 |
| 1970 | DAL | 12 | 207 | 102 | 49.3 | 1819 | 15 | 7 | 20 | 8.8 | 89.8 |
| 1971 | DAL | 10 | 143 | 78 | 54.5 | 1131 | 7 | 8 | 9 | 7.9 | 73.5 |
| 1972 | DAL | 14 | 339 | 185 | 54.6 | 2396 | 15 | 21 | 23 | 7.1 | 65.9 |
| 1973 | DAL | 14 | 32 | 13 | 40.6 | 174 | 3 | 1 | 0 | 5.4 | 76.8 |
| 1974 | NYG | 14 | 239 | 124 | 51.9 | 1522 | 9 | 13 | 13 | 6.4 | 61.7 |
| 1975 | NYG | 14 | 363 | 186 | 51.2 | 2359 | 11 | 16 | 47 | 6.5 | 63.6 |
| 1976 | NYG | 12 | 284 | 153 | 53.9 | 1865 | 9 | 20 | 39 | 6.6 | 55.6 |
| 1977 | DEN | 14 | 254 | 131 | 51.6 | 1929 | 14 | 8 | 43 | 7.6 | 82.0 |
| 1978 | DEN | 14 | 267 | 146 | 54.7 | 1802 | 11 | 8 | 36 | 6.7 | 77.0 |
| 1979 | DEN | 14 | 370 | 204 | 55.1 | 2626 | 16 | 19 | 30 | 7.1 | 70.6 |
| 1980 | DEN | 12 | 301 | 183 | 60.8 | 2150 | 12 | 13 | 26 | 7.1 | 77.8 |
| 1981 | DEN | 15 | 376 | 225 | 59.8 | 3195 | 21 | 14 | 54 | 8.5 | 90.5 |
| 1982 | DEN | 3 | 26 | 18 | 69.2 | 193 | 0 | 3 | 3 | 7.4 | 51.1 |