| 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 | Central Michigan | 31 to 7 | 424 | 154 |
| 3 | 558 | -0.719 | (2,0) | -1.719 | Richmond | 45 to 14 | 626 | 173 |
| 4 | 65 | 1.759 | (2,1) | 1.426 | Washington | 7 to 41 | 7 | 1 |
| 5 | 75 | 1.555 | (2,2) | 1.555 | Maryland | 9 to 31 | 38 | 36 |
| 6 | 88 | 1.343 | (2,3) | 1.543 | Iowa | 16 to 26 | 25 | 16 |
| 7 | 88 | 1.354 | (2,3) | 1.554 | --bye-- |
| 8 | 98 | 1.272 | (2,4) | 1.605 | Rutgers | 24 to 27 | 41 | 44 |
| 9 | 98 | 1.183 | (2,5) | 1.612 | Michigan | 0 to 49 | 6 | 2 |
| 10 | 107 | 1.170 | (2,6) | 1.670 | Minnesota | 12 to 27 | 33 | 61 |
| 11 | 80 | 1.342 | (3,6) | 1.675 | Nebraska | 20 to 17 | 58 | 81 |
| 12 | 78 | 1.360 | (3,7) | 1.760 | Ohio State | 3 to 38 | 2 | 7 |
| 13 | 68 | 1.395 | (4,7) | 1.668 | Indiana | 24 to 21 | 113 | 125 |
| 14 | 70 | 1.427 | (4,8) | 1.760 | Penn State | 0 to 42 | 9 | 11 |
| 15 | 73 | 1.343 | (4,8) | 1.677 | --bye-- |
| 16 | 73 | 1.341 | (4,8) | 1.675 | --bye-- |
| 17 | 73 | 1.320 | (4,8) | 1.654 | --bye-- |
| 18 | 72 | 1.331 | (4,8) | 1.664 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |