| 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 | Northern Arizona | 38 to 3 | 424 | 152 |
| 3 | 173 | 2.281 | (1,1) | 2.281 | Mississippi St | 24 to 31 | 106 | 85 |
| 4 | 217 | 0.718 | (2,1) | 0.384 | UTEP | 31 to 10 | 269 | 186 |
| 5 | 107 | 1.290 | (3,1) | 0.790 | Stanford | 21 to 20 | 183 | 88 |
| 6 | 93 | 1.321 | (3,2) | 1.121 | Washington | 24 to 31 | 7 | 1 |
| 7 | 86 | 1.372 | (3,3) | 1.372 | Southern Cal | 41 to 43 | 23 | 21 |
| 8 | 47 | 1.648 | (4,3) | 1.505 | Washington St | 44 to 6 | 32 | 68 |
| 9 | 53 | 1.522 | (4,3) | 1.379 | --bye-- |
| 10 | 37 | 1.778 | (5,3) | 1.528 | Oregon St | 27 to 24 | 21 | 25 |
| 11 | 32 | 1.872 | (6,3) | 1.539 | UCLA | 27 to 10 | 31 | 34 |
| 12 | 28 | 1.897 | (7,3) | 1.497 | Colorado | 34 to 31 | 68 | 84 |
| 13 | 20 | 1.978 | (8,3) | 1.524 | Utah | 42 to 18 | 21 | 23 |
| 14 | 17 | 2.053 | (9,3) | 1.553 | Arizona St | 59 to 23 | 89 | 87 |
| 15 | 16 | 1.980 | (9,3) | 1.480 | --bye-- |
| 16 | 16 | 1.972 | (9,3) | 1.472 | --bye-- |
| 17 | 16 | 1.965 | (9,3) | 1.465 | --bye-- |
| 18 | 12 | 2.058 | (10,3) | 1.519 | Oklahoma | 38 to 24 | 13 | 13 |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |