| 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 | Eureka | 13 to 14 | 166 | 680 |
| 3 | 598 | -1.281 | (0,2) | -0.281 | Ripon | 7 to 50 | 427 | 661 |
| 4 | 694 | -3.078 | (1,2) | -2.745 | Beloit | 16 to 14 | 701 | 699 |
| 5 | 698 | -3.313 | (1,2) | -2.980 | --bye-- |
| 6 | 689 | -2.572 | (1,3) | -2.072 | Chicago | 0 to 52 | 491 | 620 |
| 7 | 683 | -2.362 | (2,3) | -2.162 | Grinnell | 20 to 17 | 692 | 697 |
| 8 | 686 | -2.274 | (2,4) | -1.940 | Illinois Col | 14 to 64 | 610 | 615 |
| 9 | 689 | -2.275 | (2,4) | -1.942 | --bye-- |
| 10 | 691 | -2.375 | (2,5) | -1.947 | Cornell IA | 14 to 35 | 674 | 674 |
| 11 | 696 | -2.420 | (2,6) | -1.920 | Lake Forest | 0 to 63 | 637 | 628 |
| 12 | 695 | -2.401 | (2,7) | -1.845 | Monmouth IL | 0 to 69 | 561 | 546 |
| 13 | 696 | -2.443 | (2,7) | -1.887 | --bye-- |
| 14 | 696 | -2.428 | (2,7) | -1.873 | --bye-- |
| 15 | 695 | -2.348 | (2,7) | -1.792 | --bye-- |
| 16 | 696 | -2.357 | (2,7) | -1.802 | --bye-- |
| 17 | 695 | -2.327 | (2,7) | -1.771 | --bye-- |
| 18 | 695 | -2.327 | (2,7) | -1.771 | --bye-- |
| 19 | 695 | -2.331 | (2,7) | -1.776 | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |