| 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 | Texas | 14 to 7 | 518 | 22 |
| 2 | 88 | 1.187 | (2,0) | 0.187 | Grambling | 70 to 0 | 318 | 158 |
| 3 | 54 | 1.609 | (3,0) | 0.609 | Ohio | 37 to 9 | 158 | 87 |
| 4 | 13 | 2.216 | (3,0) | 1.216 | --bye-- |
| 5 | 4 | 2.580 | (4,0) | 1.580 | Washington | 24 to 6 | 14 | 16 |
| 6 | 7 | 2.450 | (5,0) | 1.450 | Minnesota | 42 to 3 | 76 | 50 |
| 7 | 3 | 2.680 | (6,0) | 1.680 | Illinois | 34 to 16 | 17 | 24 |
| 8 | 3 | 2.530 | (7,0) | 1.530 | Wisconsin | 34 to 0 | 110 | 96 |
| 9 | 3 | 2.562 | (7,0) | 1.562 | --bye-- |
| 10 | 3 | 2.564 | (8,0) | 1.564 | Penn St | 38 to 14 | 98 | 98 |
| 11 | | | | | Purdue | | | 121 |
| 12 | | | | | UCLA | | | 73 |
| 13 | | | | | Rutgers | | | 91 |
| 14 | | | | | Michigan | | | 14 |
| 15 | | | | | --bye-- |
| 16 | | | | | --bye-- |
| 17 | | | | | --bye-- |
| 18 | | | | | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |