The decision to fire Mike Shanahan was a surprising one and winning and losing games for the Broncos seemed to rest exclusively on the arm of Jay Cutler. Passer rating over 90 for Cutler Week 1, OAK: 41-14 Win, 137.5 Week 2, SD: 39-38 Win, 109.6 Week 3, NO: 34-32 Win, 93.3 Week 5, TB: 16-13 Win, 96.1 Week 10, CLE: 34-30 Win, 107.9 Week 11, ATL: 24-20 Win, 106.4 Week 13, NYJ: 34-17 Win, 94.8 Week 14, KC: 24-17 Win, 102.7 Passer rating under 90 for Cutler Week 4, KC: 33-19 Loss, 71.9 Week 6, JAC: 24-17 Loss, 77.8 Week 7, NE: 41-7 Loss, 64.3 Week 9, MIA: 26-17 Loss, 60.7 Week 12, OAK: 31-10 Loss, 49.8 Week 15, CAR: 30-10 Loss, 74.3 Week 16, BUF: 30-23 Loss, 72.4 Week 17, SD: 52-21 Loss, 74.9 The math is simple; the Broncos were 8-0 when Cutler had a passer rating over 90.0 and an 0-8 record when it dipped below 80.0. Click here to read RealGM's Grading the Deal on the Shanahan firing.