All-Time* NFC West Leaders
| RK | PLAYER | YEAR | PASS EPA | RUN EPA | SACK EPA | PEN EPA | TOTAL EPA | ACT PLAYS | QB PAR | QB PAA | TOTAL QBR |
| 1 | Marc Bulger, STL | 2009 | 12.3 | -3.6 | -9.0 | 2.9 | 2.7 | 307 | 8.2 | -17.3 | 32.1 |
| 2 | Matt Hasselbeck, SEA | 2008 | 4.0 | 5.9 | -10.1 | 1.0 | 0.8 | 260 | 5.7 | -15.9 | 30.9 |
| 3 | Seneca Wallace, SEA | 2008 | 31.1 | 3.3 | -10.5 | -0.7 | 23.3 | 295 | 29.2 | 4.8 | 55.3 |
| 4 | Colin Kaepernick, SF | 2012 | 45.5 | 15.2 | -11.8 | -2.5 | 46.4 | 316 | 54.8 | 28.5 | 76.8 |
| 5 | Alex Smith, SF | 2012 | 41.7 | 3.7 | -13.4 | 2.5 | 34.5 | 295 | 43.5 | 19.0 | 70.1 |
| 6 | Alex Smith, SF | 2010 | 29.5 | -0.7 | -14.1 | -0.0 | 14.7 | 422 | 22.2 | -12.8 | 40.1 |
| 7 | Shaun Hill, SF | 2008 | 40.7 | 6.0 | -15.6 | 3.2 | 34.3 | 361 | 40.1 | 10.1 | 59.1 |
| 8 | Kurt Warner, ARI | 2009 | 78.2 | -2.0 | -15.7 | 1.6 | 62.1 | 599 | 82.4 | 32.7 | 67.3 |
| 9 | Alex Smith, SF | 2009 | 32.5 | -0.8 | -16.7 | 1.9 | 16.9 | 455 | 24.1 | -13.7 | 40.2 |
| 10 | Derek Anderson, ARI | 2010 | 21.3 | 1.0 | -17.4 | 2.3 | 7.2 | 390 | 14.5 | -17.9 | 35.3 |
| RK | PLAYER | YEAR | PASS EPA | RUN EPA | SACK EPA | PEN EPA | TOTAL EPA | ACT PLAYS | QB PAR | QB PAA | TOTAL QBR |
| 11 | Kurt Warner, ARI | 2008 | 100.2 | -3.3 | -18.0 | 1.1 | 80.1 | 688 | 100.7 | 43.5 | 69.8 |
| 12 | John Skelton, ARI | 2011 | 18.7 | 6.0 | -18.4 | 0.9 | 7.2 | 341 | 12.4 | -15.9 | 35.1 |
| 13 | Matt Hasselbeck, SEA | 2010 | 38.9 | -1.0 | -20.3 | -1.6 | 16.0 | 534 | 28.7 | -15.6 | 40.4 |
| 14 | Sam Bradford, STL | 2010 | 49.2 | -1.4 | -23.9 | 5.1 | 29.0 | 720 | 41.1 | -18.7 | 41.5 |
| 15 | Sam Bradford, STL | 2011 | 22.1 | -1.6 | -24.5 | 2.0 | -1.9 | 451 | 6.2 | -31.2 | 28.6 |
| 16 | Matt Hasselbeck, SEA | 2009 | 15.6 | -1.5 | -26.3 | 5.5 | -6.7 | 591 | 3.4 | -45.7 | 26.4 |
| 17 | Sam Bradford, STL | 2012 | 76.6 | 5.1 | -27.0 | -3.4 | 51.3 | 685 | 60.1 | 3.2 | 51.6 |
| 18 | Marc Bulger, STL | 2008 | 27.9 | 3.1 | -27.3 | 1.3 | 5.0 | 550 | 15.6 | -30.0 | 32.7 |
| 19 | Russell Wilson, SEA | 2012 | 86.4 | 23.1 | -27.4 | 6.2 | 88.2 | 588 | 85.6 | 36.8 | 69.6 |
| 20 | J.T. O'Sullivan, SF | 2008 | 7.8 | 6.4 | -27.5 | 5.0 | -8.3 | 319 | -2.9 | -29.3 | 22.8 |
| RK | PLAYER | YEAR | PASS EPA | RUN EPA | SACK EPA | PEN EPA | TOTAL EPA | ACT PLAYS | QB PAR | QB PAA | TOTAL QBR |
| 21 | Kevin Kolb, ARI | 2011 | 33.0 | 2.0 | -31.0 | 2.3 | 6.4 | 332 | 11.4 | -16.1 | 34.4 |
| 22 | Tarvaris Jackson, SEA | 2011 | 43.5 | -0.2 | -34.1 | 6.2 | 15.4 | 589 | 26.6 | -22.3 | 37.7 |
| 23 | Alex Smith, SF | 2011 | 62.3 | 4.2 | -34.9 | 0.9 | 32.5 | 591 | 41.5 | -7.6 | 45.8 |
