| 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 | Ohio | 34 to 31 | 518 | 74 |
| 2 | 638 | -1.492 | (2,0) | -2.492 | Miami OH | 45 to 17 | 680 | 119 |
| 3 | 95 | 1.219 | (3,0) | 0.219 | Norfolk St | 60 to 10 | 424 | 452 |
| 4 | 111 | 1.132 | (3,1) | 0.632 | Iowa | 28 to 38 | 121 | 27 |
| 5 | 106 | 1.139 | (3,2) | 0.939 | Minnesota | 28 to 31 | 81 | 44 |
| 6 | 122 | 1.008 | (3,2) | 0.808 | --bye-- |
| 7 | 104 | 1.154 | (3,3) | 1.154 | Washington | 19 to 38 | 8 | 23 |
| 8 | 114 | 1.082 | (3,4) | 1.225 | Oregon | 10 to 56 | 18 | 2 |
| 9 | 84 | 1.272 | (4,4) | 1.272 | Purdue | 27 to 24 | 127 | 111 |
| 10 | 91 | 1.237 | (4,5) | 1.348 | Illinois | 13 to 35 | 24 | 19 |
| 11 | 77 | 1.341 | (5,5) | 1.341 | Maryland | 35 to 20 | 100 | 114 |
| 12 | 83 | 1.315 | (5,5) | 1.315 | --bye-- |
| 13 | 79 | 1.309 | (5,6) | 1.400 | Ohio St | 9 to 42 | 2 | 4 |
| 14 | 82 | 1.253 | (5,7) | 1.419 | Penn St | 36 to 40 | 50 | 41 |
| 15 | 82 | 1.255 | (5,7) | 1.422 | --bye-- |
| 16 | 80 | 1.265 | (5,7) | 1.432 | --bye-- |
| 17 | 79 | 1.282 | (5,7) | 1.449 | --bye-- |
| 18 | 76 | 1.311 | (5,7) | 1.478 | --bye-- |
| 19 | 75 | 1.315 | (5,7) | 1.482 | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |