| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 0 | 9 | 0.000 | (0,0) | 0.000 | --bye-- |
| 1 | 7 | 0.500 | (1,0) | -0.500 | Butler | 38 to 14 | 518 | 207 |
| 2 | 148 | 0.515 | (1,1) | 0.515 | Wyoming | 7 to 31 | 64 | 120 |
| 3 | 411 | -0.192 | (2,1) | -0.525 | E Washington | 17 to 14 | 609 | 189 |
| 4 | 280 | 0.233 | (2,2) | 0.233 | Utah Tech | 9 to 20 | 255 | 265 |
| 5 | 217 | 0.546 | (2,2) | 0.546 | --bye-- |
| 6 | 242 | 0.394 | (2,3) | 0.594 | North Dakota | 7 to 35 | 184 | 107 |
| 7 | 204 | 0.600 | (2,4) | 0.933 | S Dakota St | 3 to 31 | 35 | 79 |
| 8 | 215 | 0.520 | (2,5) | 0.949 | South Dakota | 14 to 17 | 99 | 105 |
| 9 | 227 | 0.447 | (2,6) | 0.947 | S Illinois | 17 to 31 | 134 | 139 |
| 10 | 244 | 0.382 | (2,7) | 0.938 | Illinois St | 16 to 31 | 113 | 113 |
| 11 | | | | | Murray St | | | 335 |
| 12 | | | | | N Dakota St | | | 34 |
| 13 | | | | | Youngstown St | | | 149 |
| 14 | | | | | --bye-- |
| 15 | | | | | --bye-- |
| 16 | | | | | --bye-- |
| 17 | | | | | --bye-- |
| 18 | | | | | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |