| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 0 | 9 | 0.000 | (0,0) | 0.000 | --bye-- |
| 1 | 698 | -1.167 | (0,1) | -0.167 | Kansas St | 35 to 38 | 512 | 66 |
| 2 | 657 | -1.960 | (1,1) | -1.960 | Portland St | 50 to 20 | 671 | 243 |
| 3 | 298 | 0.260 | (1,2) | 0.594 | Montana | 23 to 24 | 53 | 33 |
| 4 | 253 | 0.358 | (2,2) | 0.358 | Valparaiso | 58 to 7 | 569 | 439 |
| 5 | 204 | 0.603 | (2,2) | 0.603 | --bye-- |
| 6 | 184 | 0.724 | (3,2) | 0.524 | Northern Iowa | 35 to 7 | 242 | 244 |
| 7 | 130 | 1.043 | (4,2) | 0.710 | Youngstown St | 35 to 17 | 174 | 149 |
| 8 | 105 | 1.168 | (5,2) | 0.739 | S Illinois | 38 to 19 | 148 | 139 |
| 9 | 98 | 1.250 | (6,2) | 0.750 | Indiana St | 46 to 17 | 174 | 150 |
| 10 | 107 | 1.174 | (6,3) | 0.841 | South Dakota | 21 to 26 | 105 | 105 |
| 11 | | | | | N Dakota St | | | 34 |
| 12 | | | | | Murray St | | | 335 |
| 13 | | | | | S Dakota St | | | 79 |
| 14 | | | | | --bye-- |
| 15 | | | | | --bye-- |
| 16 | | | | | --bye-- |
| 17 | | | | | --bye-- |
| 18 | | | | | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |