Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1958 | LAR | 5 | 14 | 5 | 35.7 | 34 | 1 | 3 | 0 | 2.4 | 28.6 |
| 1959 | LAR | 10 | 89 | 42 | 47.2 | 709 | 2 | 4 | 0 | 8.0 | 63.4 |
| 1960 | LAR | 11 | 128 | 62 | 48.4 | 816 | 7 | 9 | 6 | 6.4 | 57.9 |
| 1961 | LAR | 14 | 142 | 72 | 50.7 | 1115 | 5 | 7 | 25 | 7.9 | 68.3 |
| 1962 | CLE | 11 | 194 | 112 | 57.7 | 1541 | 10 | 7 | 15 | 7.9 | 85.4 |
| 1963 | CLE | 13 | 256 | 135 | 52.7 | 2026 | 25 | 13 | 20 | 7.9 | 90.4 |
| 1964 | CLE | 14 | 334 | 174 | 52.1 | 2404 | 25 | 19 | 27 | 7.2 | 76.7 |
| 1965 | CLE | 12 | 243 | 119 | 49.0 | 1751 | 18 | 13 | 23 | 7.2 | 75.3 |
| 1966 | CLE | 14 | 382 | 200 | 52.4 | 2974 | 29 | 14 | 28 | 7.8 | 88.2 |
| 1967 | CLE | 13 | 280 | 136 | 48.6 | 2026 | 20 | 16 | 38 | 7.2 | 72.7 |
| 1968 | CLE | 7 | 66 | 31 | 47.0 | 639 | 7 | 6 | 10 | 9.7 | 79.0 |
| 1969 | WAS | 1 | 1 | 1 | 100.0 | 4 | 0 | 0 | 0 | 4.0 | 83.3 |
| 1970 | WAS | 1 | 4 | 1 | 25.0 | 3 | 0 | 0 | 4 | 0.8 | 39.6 |