| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 1 | 40 | 0.000 | (0,0) | 0.000 | --bye-- |
| 2 | 424 | -0.500 | (0,1) | 0.500 | Rutgers | 7 to 24 | 29 | 44 |
| 3 | 260 | 1.281 | (1,1) | 1.281 | UTEP | 38 to 7 | 410 | 186 |
| 4 | 114 | 1.372 | (1,2) | 1.705 | Duke | 14 to 38 | 31 | 31 |
| 5 | 58 | 1.693 | (2,2) | 1.693 | Minnesota | 37 to 34 | 74 | 61 |
| 6 | 68 | 1.547 | (2,3) | 1.747 | Penn State | 13 to 41 | 3 | 11 |
| 7 | 67 | 1.491 | (3,3) | 1.491 | Howard | 23 to 20 | 306 | 272 |
| 8 | 62 | 1.515 | (3,3) | 1.515 | --bye-- |
| 9 | 83 | 1.291 | (3,4) | 1.434 | Nebraska | 9 to 17 | 47 | 81 |
| 10 | 61 | 1.499 | (4,4) | 1.499 | Maryland | 33 to 27 | 64 | 36 |
| 11 | 67 | 1.411 | (4,5) | 1.522 | Iowa | 7 to 10 | 18 | 16 |
| 12 | 59 | 1.503 | (5,5) | 1.503 | Wisconsin | 24 to 10 | 56 | 53 |
| 13 | 54 | 1.533 | (6,5) | 1.442 | Purdue | 23 to 15 | 91 | 83 |
| 14 | 44 | 1.663 | (7,5) | 1.496 | Illinois | 45 to 43 | 68 | 73 |
| 15 | 47 | 1.574 | (7,5) | 1.408 | --bye-- |
| 16 | 47 | 1.571 | (7,5) | 1.405 | --bye-- |
| 17 | 49 | 1.548 | (7,5) | 1.382 | --bye-- |
| 18 | 35 | 1.661 | (8,5) | 1.431 | Utah | 14 to 7 | 23 | 23 |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |