Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | LAR | 14 | 236 | 119 | 50.4 | 1575 | 4 | 10 | 32 | 6.7 | 59.9 |
| 1982 | LAR | 9 | 205 | 109 | 53.2 | 1367 | 5 | 6 | 31 | 6.7 | 70.1 |
| 1983 | LAR | 13 | 354 | 209 | 59.0 | 2636 | 24 | 11 | 43 | 7.4 | 92.0 |
| 1984 | LAR | 16 | 560 | 345 | 61.6 | 4614 | 28 | 16 | 49 | 8.2 | 92.5 |
| 1985 | LAR | 16 | 471 | 265 | 56.3 | 3214 | 18 | 12 | 61 | 6.8 | 79.5 |
| 1986 | LAR | 14 | 421 | 240 | 57.0 | 2583 | 13 | 12 | 52 | 6.1 | 73.6 |
| 1987 | LAR | 12 | 463 | 275 | 59.4 | 3387 | 24 | 12 | 48 | 7.3 | 88.5 |
| 1988 | ARI | 14 | 443 | 255 | 57.6 | 3395 | 20 | 11 | 46 | 7.7 | 86.7 |