Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1957 | SF | 5 | 21 | 11 | 52.4 | 160 | 2 | 3 | 0 | 7.6 | 69.6 |
| 1958 | SF | 12 | 172 | 103 | 59.9 | 1224 | 6 | 13 | 0 | 7.1 | 61.8 |
| 1959 | SF | 12 | 64 | 30 | 46.9 | 354 | 2 | 7 | 0 | 5.5 | 35.0 |
| 1960 | SF | 11 | 207 | 103 | 49.8 | 1111 | 6 | 9 | 13 | 5.4 | 57.5 |
| 1961 | SF | 14 | 283 | 155 | 54.8 | 2588 | 14 | 12 | 19 | 9.1 | 84.7 |
| 1962 | SF | 14 | 304 | 175 | 57.6 | 2272 | 18 | 16 | 33 | 7.5 | 79.0 |
| 1963 | SF | 3 | 61 | 30 | 49.2 | 367 | 3 | 4 | 1 | 6.0 | 57.2 |
| 1964 | SF | 14 | 392 | 193 | 49.2 | 2498 | 14 | 16 | 17 | 6.4 | 64.6 |
| 1965 | SF | 13 | 391 | 242 | 61.9 | 3112 | 30 | 16 | 14 | 8.0 | 95.3 |
| 1966 | SF | 14 | 427 | 232 | 54.3 | 2810 | 16 | 22 | 20 | 6.6 | 65.8 |
| 1967 | SF | 14 | 349 | 168 | 48.1 | 2013 | 11 | 16 | 18 | 5.8 | 57.6 |
| 1968 | SF | 14 | 404 | 234 | 57.9 | 3020 | 22 | 21 | 25 | 7.5 | 78.0 |
| 1969 | SF | 13 | 347 | 194 | 55.9 | 2405 | 16 | 15 | 16 | 6.9 | 74.9 |
| 1970 | SF | 14 | 378 | 223 | 59.0 | 2941 | 24 | 10 | 8 | 7.8 | 93.8 |
| 1971 | SF | 14 | 387 | 208 | 53.7 | 2642 | 18 | 24 | 11 | 6.8 | 65.0 |
| 1972 | SF | 6 | 110 | 70 | 63.6 | 905 | 9 | 8 | 8 | 8.2 | 86.4 |
| 1973 | SF | 14 | 194 | 98 | 50.5 | 1126 | 3 | 12 | 4 | 5.8 | 47.7 |