| 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 | Buffalo | 23 to 10 | 518 | 157 |
| 2 | 134 | 0.600 | (2,0) | -0.400 | Northwestern LA | 66 to 0 | 408 | 342 |
| 3 | 155 | 0.813 | (2,1) | 0.479 | California | 14 to 27 | 104 | 75 |
| 4 | 128 | 0.998 | (2,1) | 0.664 | --bye-- |
| 5 | 81 | 1.429 | (3,1) | 0.929 | Rutgers | 31 to 28 | 106 | 91 |
| 6 | 76 | 1.396 | (3,2) | 1.196 | Ohio St | 3 to 42 | 7 | 3 |
| 7 | 56 | 1.637 | (4,2) | 1.304 | Purdue | 27 to 20 | 91 | 121 |
| 8 | 45 | 1.715 | (5,2) | 1.286 | Nebraska | 24 to 6 | 49 | 46 |
| 9 | 59 | 1.583 | (5,3) | 1.333 | Iowa | 3 to 41 | 44 | 45 |
| 10 | 50 | 1.653 | (6,3) | 1.319 | Michigan St | 23 to 20 | 93 | 93 |
| 11 | | | | | --bye-- |
| 12 | | | | | Oregon | | | 13 |
| 13 | | | | | Northwestern | | | 55 |
| 14 | | | | | Wisconsin | | | 96 |
| 15 | | | | | --bye-- |
| 16 | | | | | --bye-- |
| 17 | | | | | --bye-- |
| 18 | | | | | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |