| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 1 | 1 | 0.500 | (1,0) | -0.500 | San Jose St | 56 to 28 | 726 | 67 |
| 2 | 29 | 0.500 | (2,0) | -0.500 | Nevada | 66 to 14 | 424 | 190 |
| 3 | 40 | 5.080 | (3,0) | 4.080 | Stanford | 56 to 10 | 78 | 88 |
| 4 | 33 | 2.233 | (3,0) | 1.233 | --bye-- |
| 5 | 57 | 1.694 | (4,0) | 0.694 | Arizona St | 42 to 28 | 229 | 87 |
| 6 | 23 | 2.091 | (5,0) | 1.091 | Colorado | 48 to 41 | 35 | 84 |
| 7 | 23 | 2.131 | (6,0) | 1.131 | Arizona | 43 to 41 | 86 | 12 |
| 8 | 20 | 2.045 | (6,1) | 1.331 | Notre Dame | 20 to 48 | 17 | 15 |
| 9 | 22 | 1.950 | (6,2) | 1.450 | Utah | 32 to 34 | 8 | 23 |
| 10 | 17 | 2.104 | (7,2) | 1.549 | California | 50 to 49 | 66 | 45 |
| 11 | 21 | 2.002 | (7,3) | 1.602 | Washington | 42 to 52 | 2 | 1 |
| 12 | 22 | 1.958 | (7,4) | 1.685 | Oregon | 27 to 36 | 8 | 6 |
| 13 | 31 | 1.823 | (7,5) | 1.656 | UCLA | 20 to 38 | 35 | 34 |
| 14 | 29 | 1.900 | (7,5) | 1.733 | --bye-- |
| 15 | 28 | 1.822 | (7,5) | 1.655 | --bye-- |
| 16 | 29 | 1.812 | (7,5) | 1.646 | --bye-- |
| 17 | 29 | 1.800 | (7,5) | 1.634 | --bye-- |
| 18 | 21 | 1.899 | (8,5) | 1.668 | Louisville | 42 to 28 | 22 | 22 |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |