| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 1 | 726 | -0.500 | (0,1) | 0.500 | Southern Cal | 28 to 56 | 1 | 21 |
| 2 | 424 | -0.500 | (0,2) | 0.500 | Oregon St | 17 to 42 | 29 | 25 |
| 3 | 70 | 4.155 | (1,2) | 4.488 | Cal Poly SLO | 59 to 3 | 118 | 304 |
| 4 | 136 | 1.235 | (1,3) | 1.735 | Toledo | 17 to 21 | 71 | 51 |
| 5 | 205 | 0.681 | (1,4) | 1.281 | Air Force | 20 to 45 | 79 | 54 |
| 6 | 148 | 0.910 | (1,4) | 1.510 | --bye-- |
| 7 | 158 | 0.853 | (1,5) | 1.520 | Boise St | 27 to 35 | 76 | 46 |
| 8 | 132 | 1.010 | (2,5) | 1.438 | New Mexico | 52 to 24 | 211 | 146 |
| 9 | 101 | 1.168 | (3,5) | 1.418 | Utah St | 42 to 21 | 91 | 103 |
| 10 | 90 | 1.261 | (4,5) | 1.372 | Hawaii | 35 to 0 | 190 | 118 |
| 11 | 100 | 1.216 | (4,5) | 1.327 | --bye-- |
| 12 | 74 | 1.384 | (5,5) | 1.384 | Fresno St | 42 to 18 | 33 | 58 |
| 13 | 71 | 1.382 | (6,5) | 1.291 | San Diego St | 24 to 13 | 170 | 134 |
| 14 | 56 | 1.562 | (7,5) | 1.396 | UNLV | 37 to 31 | 36 | 47 |
| 15 | 56 | 1.477 | (7,5) | 1.310 | --bye-- |
| 16 | 58 | 1.471 | (7,5) | 1.304 | --bye-- |
| 17 | 57 | 1.455 | (7,5) | 1.288 | --bye-- |
| 18 | 67 | 1.363 | (7,6) | 1.286 | Coastal Carolina | 14 to 24 | 59 | 59 |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |