| 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 | Cincinnati | 20 to 17 | 518 | 57 |
| 2 | 63 | 1.515 | (2,0) | 0.515 | Akron | 68 to 0 | 147 | 183 |
| 3 | 76 | 1.385 | (3,0) | 0.385 | Houston Chr | 59 to 7 | 364 | 367 |
| 4 | 77 | 1.320 | (3,1) | 0.820 | Michigan | 27 to 30 | 28 | 18 |
| 5 | 55 | 1.598 | (3,1) | 1.098 | --bye-- |
| 6 | 37 | 1.822 | (4,1) | 1.222 | Michigan St | 38 to 27 | 61 | 89 |
| 7 | 28 | 1.888 | (5,1) | 1.221 | Maryland | 34 to 31 | 70 | 114 |
| 8 | 49 | 1.603 | (5,2) | 1.174 | Minnesota | 6 to 24 | 45 | 44 |
| 9 | 36 | 1.752 | (6,2) | 1.252 | Northwestern | 28 to 21 | 53 | 48 |
| 10 | 46 | 1.643 | (6,3) | 1.310 | USC | 17 to 21 | 18 | 14 |
| 11 | 38 | 1.720 | (7,3) | 1.320 | UCLA | 28 to 21 | 86 | 84 |
| 12 | 38 | 1.703 | (7,3) | 1.303 | --bye-- |
| 13 | 51 | 1.560 | (7,4) | 1.287 | Penn St | 10 to 37 | 60 | 41 |
| 14 | 58 | 1.474 | (7,5) | 1.307 | Iowa | 16 to 40 | 34 | 27 |
| 15 | 57 | 1.491 | (7,5) | 1.324 | --bye-- |
| 16 | 57 | 1.491 | (7,5) | 1.324 | --bye-- |
| 17 | 55 | 1.499 | (7,5) | 1.333 | --bye-- |
| 18 | 52 | 1.528 | (7,5) | 1.361 | --bye-- |
| 19 | 55 | 1.475 | (7,6) | 1.398 | Utah | 22 to 44 | 12 | 12 |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |