Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1965 | DAL | 11 | 21 | 9 | 42.9 | 157 | 1 | 1 | 7 | 7.5 | 65.0 |
| 1966 | DAL | 7 | 36 | 21 | 58.3 | 253 | 0 | 1 | 4 | 7.0 | 68.4 |
| 1967 | DAL | 14 | 18 | 9 | 50.0 | 86 | 0 | 1 | 4 | 4.8 | 40.5 |
| 1969 | CLE | 11 | 19 | 7 | 36.8 | 35 | 0 | 2 | 3 | 1.8 | 5.7 |
| 1970 | HOU | 13 | 168 | 88 | 52.4 | 1031 | 5 | 8 | 10 | 6.1 | 61.4 |
| 1971 | LAR | 14 | 18 | 5 | 27.8 | 66 | 1 | 1 | 1 | 3.7 | 37.7 |