Per Game Table | Season | Age | Tm | Lg | Pos | G | GS | MP | FG | FGA | FG% | 3P | 3PA | 3P% | 2P | 2PA | 2P% | eFG% | FT | FTA | FT% | ORB | DRB | TRB | AST | STL | BLK | TOV | PF | PTS |
| 1975-76 | 22 | PHI | NBA | SG | 71 | | 15.8 | 3.4 | 7.5 | .448 | | | | 3.4 | 7.5 | .448 | .448 | 1.6 | 2.6 | .602 | 0.9 | 0.9 | 1.8 | 1.5 | 0.5 | 0.1 | | 1.5 | 8.3 |
| 1976-77 | 23 | PHI | NBA | SG | 78 | | 28.9 | 6.0 | 13.1 | .457 | | | | 6.0 | 13.1 | .457 | .457 | 4.3 | 5.9 | .720 | 1.2 | 1.8 | 3.0 | 3.4 | 1.0 | 0.3 | | 2.7 | 16.3 |
| 1977-78 | 24 | PHI | NBA | SG | 76 | | 27.0 | 5.1 | 11.3 | .455 | | | | 5.1 | 11.3 | .455 | .455 | 5.4 | 7.4 | .731 | 1.2 | 1.6 | 2.8 | 4.0 | 0.9 | 0.5 | 2.6 | 2.6 | 15.7 |
| 1978-79 | 25 | SDC | NBA | PG | 78 | | 37.9 | 10.2 | 21.2 | .481 | | | | 10.2 | 21.2 | .481 | .481 | 8.4 | 11.1 | .756 | 1.6 | 2.2 | 3.9 | 4.4 | 1.4 | 0.4 | 3.8 | 3.2 | 28.8 |
| 1979-80 | 26 | SDC | NBA | SG | 68 | | 38.0 | 10.8 | 22.9 | .474 | 0.1 | 0.4 | .360 | 10.7 | 22.5 | .476 | .477 | 8.4 | 11.2 | .753 | 1.9 | 1.6 | 3.5 | 4.2 | 1.2 | 0.5 | 3.4 | 2.9 | 30.2 |
| 1980-81 | 27 | GSW | NBA | SG | 65 | | 36.5 | 7.9 | 17.8 | .446 | 0.1 | 0.5 | .161 | 7.9 | 17.3 | .454 | .448 | 8.1 | 10.0 | .814 | 0.7 | 1.7 | 2.4 | 5.6 | 1.3 | 0.2 | 3.0 | 2.8 | 24.1 |
| 1981-82 | 28 | GSW | NBA | SG | 78 | 78 | 35.8 | 8.3 | 18.6 | .448 | 0.1 | 0.7 | .179 | 8.2 | 17.9 | .458 | .451 | 6.1 | 8.3 | .740 | 1.5 | 1.7 | 3.2 | 5.4 | 0.9 | 0.1 | 2.7 | 2.8 | 22.9 |
| 1982-83 | 29 | TOT | NBA | SG | 73 | 69 | 36.1 | 8.9 | 19.5 | .456 | 0.2 | 0.6 | .333 | 8.7 | 18.9 | .460 | .461 | 5.9 | 8.0 | .738 | 1.3 | 1.5 | 2.8 | 4.0 | 1.3 | 0.2 | 2.9 | 3.3 | 23.9 |
| 1982-83 | 29 | GSW | NBA | SG | 19 | 18 | 36.8 | 8.6 | 19.2 | .451 | 0.0 | 0.2 | .000 | 8.6 | 19.0 | .454 | .451 | 5.6 | 7.8 | .711 | 1.2 | 1.2 | 2.3 | 4.7 | 0.8 | 0.2 | 2.6 | 3.5 | 22.8 |
| 1982-83 | 29 | CLE | NBA | SG | 54 | 51 | 35.9 | 9.0 | 19.6 | .458 | 0.3 | 0.8 | .357 | 8.7 | 18.8 | .462 | .465 | 6.0 | 8.0 | .747 | 1.3 | 1.6 | 2.9 | 3.7 | 1.5 | 0.2 | 2.9 | 3.2 | 24.2 |
| 1983-84 | 30 | CLE | NBA | SG | 75 | 71 | 31.7 | 8.3 | 18.8 | .445 | 0.3 | 0.9 | .319 | 8.1 | 17.8 | .451 | .453 | 5.3 | 6.7 | .784 | 1.2 | 1.7 | 2.9 | 3.0 | 1.3 | 0.1 | 2.1 | 2.9 | 22.3 |
| 1984-85 | 31 | CLE | NBA | SG | 71 | 50 | 31.7 | 8.6 | 18.7 | .459 | 1.0 | 2.7 | .368 | 7.6 | 16.0 | .474 | .485 | 4.3 | 5.8 | .749 | 0.9 | 2.1 | 3.0 | 4.5 | 1.1 | 0.2 | 2.0 | 2.3 | 22.5 |
| 1985-86 | 32 | CLE | NBA | SG | 75 | 75 | 33.8 | 8.7 | 19.1 | .455 | 0.9 | 2.3 | .420 | 7.7 | 16.9 | .460 | .480 | 5.1 | 6.5 | .780 | 1.0 | 1.9 | 2.9 | 4.2 | 1.2 | 0.3 | 2.3 | 2.5 | 23.4 |
| 1986-87 | 33 | PHI | NBA | SG | 20 | 2 | 14.3 | 2.0 | 6.2 | .317 | 0.1 | 0.5 | .222 | 1.9 | 5.7 | .325 | .325 | 1.8 | 2.4 | .766 | 0.3 | 0.7 | 1.0 | 1.5 | 0.3 | 0.2 | 0.9 | 1.3 | 5.8 |
| 1987-88 | 34 | HOU | NBA | SG | 58 | 0 | 11.8 | 2.5 | 6.0 | .409 | 0.1 | 0.6 | .229 | 2.3 | 5.4 | .429 | .420 | 1.4 | 1.7 | .800 | 0.2 | 0.5 | 0.8 | 1.0 | 0.3 | 0.1 | 0.8 | 1.3 | 6.4 |
| Career | | | NBA | | 886 | 345 | 30.4 | 7.3 | 16.1 | .456 | 0.4 | 1.1 | .337 | 7.1 | 15.4 | .461 | .463 | 5.3 | 7.1 | .753 | 1.1 | 1.6 | 2.7 | 3.7 | 1.0 | 0.3 | 2.5 | 2.6 | 20.3 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| 4 seasons | | CLE | NBA | | 275 | 247 | 33.1 | 8.6 | 19.0 | .454 | 0.7 | 1.7 | .378 | 8.0 | 17.3 | .461 | .471 | 5.1 | 6.7 | .766 | 1.1 | 1.9 | 2.9 | 3.9 | 1.2 | 0.2 | 2.3 | 2.7 | 23.0 |
| 4 seasons | | PHI | NBA | | 245 | 2 | 23.3 | 4.6 | 10.3 | .448 | 0.1 | 0.5 | .222 | 4.6 | 10.3 | .449 | .448 | 3.6 | 5.1 | .709 | 1.1 | 1.4 | 2.4 | 2.9 | 0.8 | 0.3 | 2.3 | 2.2 | 12.9 |
| 3 seasons | | GSW | NBA | | 162 | 96 | 36.2 | 8.2 | 18.4 | .447 | 0.1 | 0.6 | .167 | 8.1 | 17.8 | .456 | .450 | 6.9 | 8.9 | .770 | 1.2 | 1.6 | 2.8 | 5.4 | 1.1 | 0.1 | 2.8 | 2.9 | 23.4 |
| 2 seasons | | SDC | NBA | | 146 | | 37.9 | 10.5 | 22.0 | .477 | 0.1 | 0.4 | .360 | 10.4 | 21.8 | .478 | .479 | 8.4 | 11.1 | .754 | 1.8 | 1.9 | 3.7 | 4.3 | 1.3 | 0.5 | 3.6 | 3.1 | 29.4 |
| 1 season | | HOU | NBA | | 58 | 0 | 11.8 | 2.5 | 6.0 | .409 | 0.1 | 0.6 | .229 | 2.3 | 5.4 | .429 | .420 | 1.4 | 1.7 | .800 | 0.2 | 0.5 | 0.8 | 1.0 | 0.3 | 0.1 | 0.8 | 1.3 | 6.4 |