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 |
| 2009-10 | 20 | OKC | NBA | SG | 76 | 0 | 22.9 | 3.1 | 7.6 | .403 | 1.2 | 3.3 | .375 | 1.8 | 4.3 | .424 | .484 | 2.6 | 3.2 | .808 | 0.6 | 2.6 | 3.2 | 1.8 | 1.1 | 0.3 | 1.4 | 2.6 | 9.9 |
| 2010-11 | 21 | OKC | NBA | SG | 82 | 5 | 26.7 | 3.6 | 8.3 | .436 | 1.4 | 4.0 | .349 | 2.3 | 4.4 | .514 | .518 | 3.5 | 4.2 | .843 | 0.5 | 2.6 | 3.1 | 2.1 | 1.1 | 0.3 | 1.3 | 2.5 | 12.2 |
| 2011-12 | 22 | OKC | NBA | SG | 62 | 2 | 31.4 | 5.0 | 10.1 | .491 | 1.8 | 4.7 | .390 | 3.1 | 5.4 | .579 | .582 | 5.0 | 6.0 | .846 | 0.5 | 3.6 | 4.1 | 3.7 | 1.0 | 0.2 | 2.2 | 2.4 | 16.8 |
| 2012-13 | 23 | HOU | NBA | SG | 78 | 78 | 38.3 | 7.5 | 17.1 | .438 | 2.3 | 6.2 | .368 | 5.2 | 10.9 | .477 | .504 | 8.6 | 10.2 | .851 | 0.8 | 4.1 | 4.9 | 5.8 | 1.8 | 0.5 | 3.8 | 2.3 | 25.9 |
| 2013-14 | 24 | HOU | NBA | SG | 73 | 73 | 38.0 | 7.5 | 16.5 | .456 | 2.4 | 6.6 | .366 | 5.1 | 9.9 | .515 | .529 | 7.9 | 9.1 | .866 | 0.8 | 3.9 | 4.7 | 6.1 | 1.6 | 0.4 | 3.6 | 2.4 | 25.4 |
| 2014-15 | 25 | HOU | NBA | SG | 81 | 81 | 36.8 | 8.0 | 18.1 | .440 | 2.6 | 6.9 | .375 | 5.4 | 11.3 | .480 | .511 | 8.8 | 10.2 | .868 | 0.9 | 4.7 | 5.7 | 7.0 | 1.9 | 0.7 | 4.0 | 2.6 | 27.4 |
| 2015-16 | 26 | HOU | NBA | SG | 82 | 82 | 38.1 | 8.7 | 19.7 | .439 | 2.9 | 8.0 | .359 | 5.8 | 11.7 | .494 | .512 | 8.8 | 10.2 | .860 | 0.8 | 5.3 | 6.1 | 7.5 | 1.7 | 0.6 | 4.6 | 2.8 | 29.0 |
| 2016-17 | 27 | HOU | NBA | PG | 81 | 81 | 36.4 | 8.3 | 18.9 | .440 | 3.2 | 9.3 | .347 | 5.1 | 9.6 | .530 | .525 | 9.2 | 10.9 | .847 | 1.2 | 7.0 | 8.1 | 11.2 | 1.5 | 0.5 | 5.7 | 2.7 | 29.1 |
| 2017-18 | 28 | HOU | NBA | SG | 72 | 72 | 35.4 | 9.0 | 20.1 | .449 | 3.7 | 10.0 | .367 | 5.4 | 10.1 | .531 | .541 | 8.7 | 10.1 | .858 | 0.6 | 4.8 | 5.4 | 8.8 | 1.8 | 0.7 | 4.4 | 2.3 | 30.4 |
| 2018-19 | 29 | HOU | NBA | PG | 78 | 78 | 36.8 | 10.8 | 24.5 | .442 | 4.8 | 13.2 | .368 | 6.0 | 11.3 | .528 | .541 | 9.7 | 11.0 | .879 | 0.8 | 5.8 | 6.6 | 7.5 | 2.0 | 0.7 | 5.0 | 3.1 | 36.1 |
| 2019-20 | 30 | HOU | NBA | SG | 68 | 68 | 36.5 | 9.9 | 22.3 | .444 | 4.4 | 12.4 | .355 | 5.5 | 9.9 | .556 | .543 | 10.2 | 11.8 | .865 | 1.0 | 5.5 | 6.6 | 7.5 | 1.8 | 0.9 | 4.5 | 3.3 | 34.3 |
| Career | | | NBA | | 833 | 620 | 34.3 | 7.4 | 16.7 | .443 | 2.8 | 7.7 | .363 | 4.6 | 9.0 | .511 | .527 | 7.6 | 8.8 | .858 | 0.8 | 4.6 | 5.3 | 6.3 | 1.6 | 0.5 | 3.7 | 2.6 | 25.2 |
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| 8 seasons | | HOU | NBA | | 613 | 613 | 37.1 | 8.7 | 19.6 | .443 | 3.3 | 9.0 | .362 | 5.4 | 10.6 | .512 | .526 | 9.0 | 10.4 | .862 | 0.9 | 5.2 | 6.0 | 7.7 | 1.8 | 0.6 | 4.5 | 2.7 | 29.6 |
| 3 seasons | | OKC | NBA | | 220 | 7 | 26.7 | 3.8 | 8.6 | .444 | 1.5 | 3.9 | .370 | 2.4 | 4.7 | .506 | .529 | 3.6 | 4.3 | .835 | 0.5 | 2.9 | 3.4 | 2.5 | 1.1 | 0.3 | 1.6 | 2.5 | 12.7 |