| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 0 | 9 | 0.000 | (0,0) | 0.000 | --bye-- |
| 1 | 518 | -0.500 | (0,1) | 0.500 | Utah | 10 to 43 | 7 | 12 |
| 2 | 658 | -1.971 | (0,2) | -0.971 | UNLV | 23 to 30 | 621 | 53 |
| 3 | 451 | -0.405 | (0,3) | 0.595 | New Mexico | 10 to 35 | 309 | 51 |
| 4 | 338 | 0.010 | (0,3) | 1.010 | --bye-- |
| 5 | 228 | 0.460 | (0,4) | 1.460 | Northwestern | 14 to 17 | 98 | 48 |
| 6 | 152 | 0.857 | (1,4) | 1.457 | Penn St | 42 to 37 | 97 | 41 |
| 7 | 102 | 1.176 | (2,4) | 1.509 | Michigan St | 38 to 13 | 93 | 89 |
| 8 | 85 | 1.259 | (3,4) | 1.402 | Maryland | 20 to 17 | 95 | 114 |
| 9 | 76 | 1.328 | (3,5) | 1.578 | Indiana | 6 to 56 | 2 | 1 |
| 10 | 73 | 1.337 | (3,5) | 1.587 | --bye-- |
| 11 | 86 | 1.262 | (3,6) | 1.595 | Nebraska | 21 to 28 | 38 | 55 |
| 12 | 85 | 1.297 | (3,7) | 1.697 | Ohio St | 10 to 48 | 4 | 4 |
| 13 | 82 | 1.269 | (3,8) | 1.723 | Washington | 14 to 48 | 22 | 23 |
| 14 | 85 | 1.238 | (3,9) | 1.738 | USC | 10 to 29 | 11 | 14 |
| 15 | 83 | 1.249 | (3,9) | 1.749 | --bye-- |
| 16 | 83 | 1.253 | (3,9) | 1.753 | --bye-- |
| 17 | 82 | 1.260 | (3,9) | 1.760 | --bye-- |
| 18 | 84 | 1.268 | (3,9) | 1.768 | --bye-- |
| 19 | 84 | 1.248 | (3,9) | 1.748 | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |