| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 1 | 40 | 0.000 | (0,0) | 0.000 | --bye-- |
| 2 | 29 | 0.500 | (1,0) | -0.500 | Anderson IN | 61 to 0 | 424 | 732 |
| 3 | 512 | -0.250 | (1,1) | -0.250 | Rose-Hulman | 28 to 30 | 431 | 491 |
| 4 | 604 | -1.055 | (2,1) | -1.389 | Franklin | 58 to 43 | 705 | 641 |
| 5 | 599 | -0.929 | (2,2) | -0.929 | Hanover | 14 to 38 | 391 | 529 |
| 6 | 609 | -0.966 | (2,3) | -0.766 | Alma | 30 to 70 | 380 | 294 |
| 7 | 626 | -0.969 | (3,3) | -0.969 | Adrian | 34 to 14 | 722 | 722 |
| 8 | 559 | -0.703 | (4,3) | -0.846 | Olivet | 28 to 14 | 598 | 607 |
| 9 | 505 | -0.448 | (5,3) | -0.698 | Albion | 35 to 28 | 459 | 456 |
| 10 | 513 | -0.473 | (5,3) | -0.723 | --bye-- |
| 11 | 524 | -0.536 | (5,4) | -0.647 | Hope | 28 to 38 | 355 | 359 |
| 12 | 515 | -0.481 | (6,4) | -0.681 | Kalamazoo | 42 to 29 | 616 | 610 |
| 13 | 501 | -0.456 | (6,4) | -0.656 | --bye-- |
| 14 | 499 | -0.451 | (6,4) | -0.651 | --bye-- |
| 15 | 506 | -0.555 | (6,4) | -0.755 | --bye-- |
| 16 | 507 | -0.564 | (6,4) | -0.764 | --bye-- |
| 17 | 512 | -0.571 | (6,4) | -0.771 | --bye-- |
| 18 | 513 | -0.588 | (6,4) | -0.788 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |