| 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 | W Illinois | 52 to 3 | 518 | 285 |
| 2 | 9 | 3.508 | (2,0) | 2.508 | Duke | 45 to 19 | 27 | 41 |
| 3 | 48 | 1.692 | (3,0) | 0.692 | W Michigan | 38 to 0 | 193 | 95 |
| 4 | 43 | 1.653 | (3,1) | 1.153 | Indiana | 10 to 63 | 12 | 2 |
| 5 | 18 | 2.183 | (4,1) | 1.583 | USC | 34 to 32 | 24 | 18 |
| 6 | 10 | 2.284 | (5,1) | 1.617 | Purdue | 43 to 27 | 65 | 121 |
| 7 | 17 | 2.183 | (5,2) | 1.755 | Ohio St | 16 to 34 | 3 | 3 |
| 8 | 19 | 2.090 | (5,2) | 1.661 | --bye-- |
| 9 | 30 | 1.929 | (5,3) | 1.679 | Washington | 25 to 42 | 14 | 16 |
| 10 | 24 | 2.005 | (6,3) | 1.672 | Rutgers | 35 to 13 | 91 | 91 |
| 11 | | | | | --bye-- |
| 12 | | | | | Maryland | | | 84 |
| 13 | | | | | Wisconsin | | | 96 |
| 14 | | | | | Northwestern | | | 55 |
| 15 | | | | | --bye-- |
| 16 | | | | | --bye-- |
| 17 | | | | | --bye-- |
| 18 | | | | | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |