| 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 | Eureka | 16 to 41 | 29 | 717 |
| 3 | 457 | 0.000 | (1,1) | 0.000 | Beloit | 31 to 14 | 588 | 753 |
| 4 | 699 | -1.737 | (1,2) | -1.404 | Chicago | 0 to 63 | 623 | 643 |
| 5 | 705 | -1.629 | (1,2) | -1.296 | --bye-- |
| 6 | 705 | -1.505 | (1,3) | -1.005 | Lake Forest | 0 to 50 | 393 | 622 |
| 7 | 747 | -1.890 | (1,4) | -1.290 | Ripon | 3 to 10 | 713 | 681 |
| 8 | 743 | -1.839 | (1,5) | -1.172 | Illinois College | 7 to 61 | 525 | 537 |
| 9 | 741 | -1.724 | (2,5) | -1.296 | Grinnell | 14 to 7 | 754 | 749 |
| 10 | 742 | -1.778 | (2,6) | -1.278 | Cornell IA | 21 to 28 | 648 | 639 |
| 11 | 742 | -1.748 | (3,6) | -1.414 | Lawrence | 48 to 28 | 762 | 761 |
| 12 | 741 | -1.712 | (3,7) | -1.312 | Monmouth IL | 7 to 42 | 554 | 527 |
| 13 | 740 | -1.640 | (3,7) | -1.240 | --bye-- |
| 14 | 736 | -1.647 | (3,7) | -1.247 | --bye-- |
| 15 | 732 | -1.699 | (3,7) | -1.299 | --bye-- |
| 16 | 734 | -1.736 | (3,7) | -1.336 | --bye-- |
| 17 | 738 | -1.756 | (3,7) | -1.356 | --bye-- |
| 18 | 736 | -1.774 | (3,7) | -1.374 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |