Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1960 | DAL | 6 | 68 | 29 | 42.6 | 281 | 2 | 5 | 4 | 4.1 | 34.0 |
| 1961 | DAL | 8 | 182 | 94 | 51.6 | 1161 | 9 | 11 | 18 | 6.4 | 63.0 |
| 1962 | DAL | 13 | 212 | 105 | 49.5 | 1679 | 15 | 8 | 17 | 7.9 | 84.2 |
| 1963 | DAL | 14 | 310 | 167 | 53.9 | 2381 | 17 | 18 | 34 | 7.7 | 73.1 |
| 1964 | DAL | 12 | 323 | 158 | 48.9 | 2143 | 9 | 16 | 58 | 6.6 | 59.1 |
| 1965 | DAL | 14 | 305 | 141 | 46.2 | 2415 | 22 | 13 | 38 | 7.9 | 79.9 |
| 1966 | DAL | 13 | 344 | 177 | 51.5 | 2805 | 24 | 12 | 37 | 8.2 | 87.7 |
| 1967 | DAL | 11 | 255 | 128 | 50.2 | 1834 | 16 | 16 | 21 | 7.2 | 68.7 |
| 1968 | DAL | 13 | 309 | 171 | 55.3 | 2500 | 21 | 12 | 30 | 8.1 | 88.4 |