| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 0 | 9 | 0.000 | (0,0) | 0.000 | --bye-- |
| 1 | 7 | 0.500 | (1,0) | -0.500 | Colorado St | 38 to 21 | 518 | 152 |
| 2 | 52 | 1.632 | (2,0) | 0.632 | UC Davis | 70 to 10 | 121 | 81 |
| 3 | 58 | 1.536 | (2,0) | 0.536 | --bye-- |
| 4 | 11 | 2.358 | (3,0) | 1.358 | Washington St | 59 to 24 | 38 | 67 |
| 5 | 14 | 2.236 | (3,1) | 1.736 | Ohio St | 6 to 24 | 4 | 3 |
| 6 | 12 | 2.247 | (4,1) | 1.647 | Maryland | 24 to 20 | 50 | 84 |
| 7 | 8 | 2.332 | (5,1) | 1.665 | Rutgers | 38 to 19 | 104 | 91 |
| 8 | 23 | 1.998 | (5,2) | 1.569 | Michigan | 7 to 24 | 22 | 14 |
| 9 | 14 | 2.173 | (6,2) | 1.673 | Illinois | 42 to 25 | 30 | 24 |
| 10 | 16 | 2.142 | (6,2) | 1.642 | --bye-- |
| 11 | | | | | Wisconsin | | | 96 |
| 12 | | | | | Purdue | | | 121 |
| 13 | | | | | UCLA | | | 73 |
| 14 | | | | | Oregon | | | 13 |
| 15 | | | | | --bye-- |
| 16 | | | | | --bye-- |
| 17 | | | | | --bye-- |
| 18 | | | | | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |