| 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 | Elmhurst | 3 to 14 | 29 | 653 |
| 3 | 576 | -0.833 | (0,2) | 0.167 | Defiance | 17 to 34 | 437 | 652 |
| 4 | 639 | -1.269 | (1,2) | -0.935 | Bluffton | 23 to 15 | 656 | 666 |
| 5 | 679 | -1.432 | (1,3) | -0.932 | Greenville | 35 to 45 | 581 | 734 |
| 6 | 693 | -1.393 | (1,4) | -0.793 | Hope | 21 to 30 | 378 | 359 |
| 7 | 722 | -1.604 | (1,5) | -0.938 | Trine | 14 to 34 | 626 | 513 |
| 8 | 738 | -1.711 | (1,6) | -0.997 | Kalamazoo | 23 to 45 | 590 | 610 |
| 9 | 730 | -1.562 | (1,6) | -0.848 | --bye-- |
| 10 | 725 | -1.523 | (1,7) | -0.773 | Albion | 21 to 34 | 452 | 456 |
| 11 | 716 | -1.473 | (1,8) | -0.695 | Alma | 24 to 45 | 335 | 294 |
| 12 | 722 | -1.522 | (1,9) | -0.722 | Olivet | 10 to 32 | 613 | 607 |
| 13 | 724 | -1.495 | (1,9) | -0.695 | --bye-- |
| 14 | 718 | -1.493 | (1,9) | -0.693 | --bye-- |
| 15 | 719 | -1.591 | (1,9) | -0.791 | --bye-- |
| 16 | 719 | -1.597 | (1,9) | -0.797 | --bye-- |
| 17 | 723 | -1.608 | (1,9) | -0.808 | --bye-- |
| 18 | 722 | -1.626 | (1,9) | -0.826 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |