| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 1 | 40 | 0.000 | (0,0) | 0.000 | --bye-- |
| 2 | 29 | 0.500 | (1,0) | -0.500 | Southern Utah | 24 to 21 | 424 | 196 |
| 3 | 684 | -6.719 | (1,1) | -6.719 | Oklahoma St | 15 to 27 | 668 | 19 |
| 4 | 139 | 1.187 | (1,2) | 1.520 | Fresno St | 0 to 29 | 25 | 58 |
| 5 | 229 | 0.562 | (1,3) | 1.062 | Southern Cal | 28 to 42 | 57 | 21 |
| 6 | 196 | 0.693 | (1,4) | 1.293 | California | 21 to 24 | 54 | 45 |
| 7 | 155 | 0.858 | (1,5) | 1.524 | Colorado | 24 to 27 | 30 | 84 |
| 8 | 156 | 0.852 | (1,5) | 1.519 | --bye-- |
| 9 | 147 | 0.905 | (1,6) | 1.619 | Washington | 7 to 15 | 5 | 1 |
| 10 | 104 | 1.196 | (2,6) | 1.696 | Washington St | 38 to 27 | 56 | 68 |
| 11 | 107 | 1.158 | (2,7) | 1.714 | Utah | 3 to 55 | 15 | 23 |
| 12 | 91 | 1.280 | (3,7) | 1.680 | UCLA | 17 to 7 | 43 | 34 |
| 13 | 90 | 1.254 | (3,8) | 1.709 | Oregon | 13 to 49 | 8 | 6 |
| 14 | 89 | 1.292 | (3,9) | 1.792 | Arizona | 23 to 59 | 17 | 12 |
| 15 | 92 | 1.213 | (3,9) | 1.713 | --bye-- |
| 16 | 91 | 1.205 | (3,9) | 1.705 | --bye-- |
| 17 | 91 | 1.199 | (3,9) | 1.699 | --bye-- |
| 18 | 87 | 1.222 | (3,9) | 1.722 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |