| 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 | Nevada | 46 to 11 | 518 | 163 |
| 2 | 596 | -0.985 | (2,0) | -1.985 | Florida Intl | 34 to 0 | 660 | 104 |
| 3 | 57 | 1.547 | (3,0) | 0.547 | Villanova | 52 to 6 | 288 | 80 |
| 4 | 49 | 1.598 | (3,0) | 0.598 | --bye-- |
| 5 | 52 | 1.619 | (3,1) | 1.119 | Oregon | 24 to 30 | 20 | 2 |
| 6 | 97 | 1.195 | (3,2) | 0.995 | UCLA | 37 to 42 | 152 | 84 |
| 7 | 101 | 1.185 | (3,3) | 1.185 | Northwestern | 21 to 22 | 53 | 48 |
| 8 | 111 | 1.092 | (3,4) | 1.234 | Iowa | 24 to 25 | 63 | 27 |
| 9 | 101 | 1.127 | (3,4) | 1.270 | --bye-- |
| 10 | 98 | 1.161 | (3,5) | 1.411 | Ohio St | 14 to 38 | 3 | 4 |
| 11 | 94 | 1.199 | (3,6) | 1.533 | Indiana | 24 to 27 | 3 | 1 |
| 12 | 81 | 1.326 | (4,6) | 1.526 | Michigan St | 28 to 10 | 102 | 89 |
| 13 | 60 | 1.477 | (5,6) | 1.568 | Nebraska | 37 to 10 | 51 | 55 |
| 14 | 50 | 1.550 | (6,6) | 1.550 | Rutgers | 40 to 36 | 82 | 75 |
| 15 | 49 | 1.573 | (6,6) | 1.573 | --bye-- |
| 16 | 49 | 1.582 | (6,6) | 1.582 | --bye-- |
| 17 | 48 | 1.588 | (6,6) | 1.588 | --bye-- |
| 18 | 40 | 1.664 | (7,6) | 1.587 | Clemson | 22 to 10 | 67 | 64 |
| 19 | 41 | 1.667 | (7,6) | 1.590 | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |