| 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 | Ohio State | 3 to 23 | 29 | 7 |
| 3 | 145 | 2.594 | (1,1) | 2.594 | Indiana St | 41 to 7 | 236 | 349 |
| 4 | 110 | 1.409 | (1,2) | 1.743 | Louisville | 14 to 21 | 27 | 22 |
| 5 | 95 | 1.393 | (2,2) | 1.393 | Akron | 29 to 27 | 196 | 298 |
| 6 | 118 | 1.116 | (2,3) | 1.316 | Maryland | 17 to 44 | 44 | 36 |
| 7 | 106 | 1.209 | (2,3) | 1.409 | --bye-- |
| 8 | 127 | 1.057 | (2,4) | 1.390 | Michigan | 7 to 52 | 8 | 2 |
| 9 | 126 | 1.020 | (2,5) | 1.448 | Rutgers | 14 to 31 | 40 | 44 |
| 10 | 120 | 1.086 | (2,6) | 1.586 | Penn State | 24 to 33 | 8 | 11 |
| 11 | 84 | 1.322 | (3,6) | 1.655 | Wisconsin | 20 to 14 | 41 | 53 |
| 12 | 99 | 1.220 | (3,7) | 1.620 | Illinois | 45 to 48 | 52 | 73 |
| 13 | 113 | 1.112 | (3,8) | 1.567 | Michigan St | 21 to 24 | 68 | 72 |
| 14 | 120 | 1.078 | (3,9) | 1.578 | Purdue | 31 to 35 | 80 | 83 |
| 15 | 121 | 0.992 | (3,9) | 1.492 | --bye-- |
| 16 | 123 | 0.988 | (3,9) | 1.488 | --bye-- |
| 17 | 126 | 0.967 | (3,9) | 1.467 | --bye-- |
| 18 | 125 | 0.964 | (3,9) | 1.464 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |