| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 0 | 9 | 0.000 | (0,0) | 0.000 | --bye-- |
| 1 | 188 | 0.000 | (0,0) | 0.000 | --bye-- |
| 2 | 443 | -0.500 | (0,1) | 0.500 | Carnegie Mellon | 0 to 20 | 166 | 391 |
| 3 | 26 | 2.040 | (1,1) | 2.040 | Cornell IA | 28 to 12 | 119 | 674 |
| 4 | 268 | 0.279 | (2,1) | -0.054 | Illinois Col | 24 to 21 | 407 | 615 |
| 5 | 349 | -0.097 | (2,1) | -0.430 | --bye-- |
| 6 | 491 | -0.791 | (3,1) | -1.291 | Knox | 52 to 0 | 689 | 695 |
| 7 | 544 | -1.032 | (4,1) | -1.632 | Lawrence | 66 to 0 | 686 | 700 |
| 8 | 555 | -1.033 | (5,1) | -1.699 | Ripon | 37 to 12 | 655 | 661 |
| 9 | 574 | -1.136 | (6,1) | -1.850 | Grinnell | 38 to 7 | 694 | 697 |
| 10 | 588 | -1.222 | (6,2) | -1.722 | Monmouth IL | 0 to 29 | 540 | 546 |
| 11 | 600 | -1.304 | (7,2) | -1.860 | Beloit | 40 to 0 | 699 | 699 |
| 12 | 624 | -1.466 | (7,3) | -1.866 | Lake Forest | 28 to 34 | 630 | 628 |
| 13 | 627 | -1.497 | (7,3) | -1.897 | --bye-- |
| 14 | 626 | -1.485 | (7,3) | -1.885 | --bye-- |
| 15 | 625 | -1.408 | (7,3) | -1.808 | --bye-- |
| 16 | 625 | -1.417 | (7,3) | -1.817 | --bye-- |
| 17 | 620 | -1.390 | (7,3) | -1.790 | --bye-- |
| 18 | 620 | -1.390 | (7,3) | -1.790 | --bye-- |
| 19 | 620 | -1.395 | (7,3) | -1.795 | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |