| 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 | Coe | 6 to 56 | 29 | 402 |
| 3 | 381 | 0.500 | (1,1) | 0.500 | Lawrence | 31 to 7 | 537 | 761 |
| 4 | 535 | -0.696 | (1,2) | -0.363 | Lake Forest | 7 to 41 | 336 | 622 |
| 5 | 595 | -0.918 | (1,2) | -0.585 | --bye-- |
| 6 | 604 | -0.947 | (2,2) | -0.947 | Ripon | 36 to 33 | 720 | 681 |
| 7 | 654 | -1.109 | (3,2) | -1.309 | Beloit | 36 to 24 | 761 | 753 |
| 8 | 678 | -1.250 | (3,3) | -1.250 | Monmouth IL | 6 to 43 | 597 | 527 |
| 9 | 657 | -1.056 | (4,3) | -1.199 | Chicago | 47 to 34 | 688 | 643 |
| 10 | 648 | -1.023 | (5,3) | -1.273 | Knox | 28 to 21 | 742 | 736 |
| 11 | 659 | -1.093 | (5,4) | -1.204 | Illinois College | 34 to 76 | 546 | 537 |
| 12 | 644 | -1.031 | (6,4) | -1.231 | Grinnell | 51 to 20 | 748 | 749 |
| 13 | 630 | -0.972 | (6,4) | -1.172 | --bye-- |
| 14 | 627 | -0.976 | (6,4) | -1.176 | --bye-- |
| 15 | 626 | -1.025 | (6,4) | -1.225 | --bye-- |
| 16 | 632 | -1.063 | (6,4) | -1.263 | --bye-- |
| 17 | 636 | -1.084 | (6,4) | -1.284 | --bye-- |
| 18 | 639 | -1.102 | (6,4) | -1.302 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |