Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1970 | LV | 3 | 7 | 2 | 28.6 | 52 | 0 | 1 | 0 | 7.4 | 18.5 |
| 1971 | LV | 14 | 48 | 24 | 50.0 | 268 | 1 | 4 | 4 | 5.6 | 39.2 |
| 1972 | LV | 14 | 74 | 44 | 59.5 | 524 | 4 | 3 | 8 | 7.1 | 82.3 |
| 1973 | LV | 14 | 260 | 163 | 62.7 | 1997 | 14 | 10 | 34 | 7.7 | 88.3 |
| 1974 | LV | 14 | 310 | 178 | 57.4 | 2469 | 26 | 12 | 18 | 8.0 | 94.9 |
| 1975 | LV | 14 | 293 | 171 | 58.4 | 2296 | 16 | 24 | 19 | 7.8 | 67.4 |
| 1976 | LV | 12 | 291 | 194 | 66.7 | 2737 | 27 | 17 | 19 | 9.4 | 103.4 |
| 1977 | LV | 13 | 294 | 169 | 57.5 | 2176 | 20 | 20 | 16 | 7.4 | 75.2 |
| 1978 | LV | 16 | 406 | 237 | 58.4 | 2944 | 16 | 30 | 37 | 7.3 | 63.3 |
| 1979 | LV | 16 | 498 | 304 | 61.0 | 3615 | 26 | 22 | 34 | 7.3 | 82.2 |
| 1980 | HOU | 16 | 457 | 293 | 64.1 | 3202 | 13 | 28 | 27 | 7.0 | 68.7 |
| 1981 | HOU | 13 | 285 | 165 | 57.9 | 1988 | 14 | 18 | 29 | 7.0 | 69.5 |
| 1982 | NO | 8 | 189 | 117 | 61.9 | 1343 | 6 | 10 | 13 | 7.1 | 71.8 |
| 1983 | NO | 14 | 311 | 176 | 56.6 | 1988 | 9 | 18 | 18 | 6.4 | 61.4 |
| 1984 | NO | 3 | 70 | 33 | 47.1 | 339 | 2 | 5 | 5 | 4.8 | 41.3 |