Regular season
| Year | Team | Games | Att | Cmp | Cmp% | Pass Yds | Pass TD | INT | Sacks | Y/A | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2006 | DAL | 13 | 337 | 220 | 65.3 | 2903 | 19 | 13 | 21 | 8.6 | 95.1 |
| 2007 | DAL | 16 | 520 | 335 | 64.4 | 4211 | 36 | 19 | 25 | 8.1 | 97.4 |
| 2008 | DAL | 13 | 451 | 276 | 61.2 | 3448 | 26 | 14 | 20 | 7.6 | 91.2 |
| 2009 | DAL | 16 | 550 | 347 | 63.1 | 4483 | 26 | 9 | 34 | 8.2 | 97.6 |
| 2010 | DAL | 6 | 213 | 148 | 69.5 | 1605 | 11 | 7 | 7 | 7.5 | 94.9 |
| 2011 | DAL | 16 | 522 | 346 | 66.3 | 4184 | 31 | 10 | 36 | 8.0 | 102.5 |
| 2012 | DAL | 16 | 648 | 425 | 65.6 | 4903 | 28 | 19 | 36 | 7.6 | 90.5 |
| 2013 | DAL | 15 | 535 | 342 | 63.9 | 3828 | 31 | 10 | 35 | 7.2 | 96.7 |
| 2014 | DAL | 15 | 435 | 304 | 69.9 | 3705 | 34 | 9 | 29 | 8.5 | 113.2 |
| 2015 | DAL | 4 | 121 | 83 | 68.6 | 884 | 5 | 7 | 6 | 7.3 | 79.4 |
| 2016 | DAL | 1 | 4 | 3 | 75.0 | 29 | 1 | 0 | 0 | 7.2 | 134.4 |