| 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 | Rockford | 15 to 19 | 166 | 688 |
| 3 | 568 | -1.062 | (0,2) | -0.062 | Grinnell | 0 to 24 | 371 | 697 |
| 4 | 701 | -4.070 | (0,3) | -3.070 | Knox | 14 to 16 | 694 | 695 |
| 5 | 701 | -4.261 | (0,3) | -3.261 | --bye-- |
| 6 | 701 | -3.361 | (0,4) | -2.361 | Cornell IA | 19 to 26 | 650 | 674 |
| 7 | 701 | -3.291 | (0,5) | -2.291 | Lake Forest | 0 to 59 | 666 | 628 |
| 8 | 700 | -2.936 | (1,5) | -2.269 | Lawrence | 34 to 0 | 696 | 700 |
| 9 | 699 | -2.809 | (1,6) | -2.095 | Monmouth IL | 0 to 72 | 571 | 546 |
| 10 | 700 | -2.767 | (1,7) | -2.017 | Ripon | 0 to 49 | 661 | 661 |
| 11 | 699 | -2.728 | (1,8) | -1.950 | Chicago | 0 to 40 | 600 | 620 |
| 12 | 699 | -2.725 | (1,9) | -1.925 | Illinois Col | 7 to 38 | 615 | 615 |
| 13 | 700 | -2.767 | (1,9) | -1.967 | --bye-- |
| 14 | 699 | -2.752 | (1,9) | -1.952 | --bye-- |
| 15 | 699 | -2.670 | (1,9) | -1.870 | --bye-- |
| 16 | 699 | -2.680 | (1,9) | -1.880 | --bye-- |
| 17 | 699 | -2.649 | (1,9) | -1.849 | --bye-- |
| 18 | 699 | -2.649 | (1,9) | -1.849 | --bye-- |
| 19 | 699 | -2.654 | (1,9) | -1.854 | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |