| 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 | Iowa St | 9 to 30 | 29 | 37 |
| 3 | 357 | 0.709 | (0,2) | 1.709 | Weber St | 17 to 34 | 238 | 138 |
| 4 | 284 | 0.390 | (1,2) | 0.724 | Idaho St | 41 to 17 | 377 | 246 |
| 5 | 247 | 0.500 | (1,2) | 0.833 | --bye-- |
| 6 | 155 | 0.892 | (2,2) | 0.892 | Youngstown St | 44 to 41 | 182 | 115 |
| 7 | 125 | 1.031 | (3,2) | 0.831 | Indiana St | 27 to 20 | 397 | 349 |
| 8 | 133 | 1.009 | (3,3) | 1.009 | South Dakota St | 6 to 41 | 31 | 18 |
| 9 | 103 | 1.163 | (4,3) | 1.020 | North Dakota | 27 to 0 | 119 | 117 |
| 10 | 91 | 1.254 | (5,3) | 1.004 | Illinois St | 24 to 21 | 224 | 199 |
| 11 | 101 | 1.214 | (6,3) | 0.881 | Western Illinois | 50 to 6 | 404 | 403 |
| 12 | 114 | 1.081 | (6,4) | 0.881 | Missouri St | 16 to 35 | 187 | 189 |
| 13 | 126 | 1.002 | (6,5) | 0.912 | North Dakota St | 27 to 48 | 84 | 69 |
| 14 | 121 | 1.059 | (6,5) | 0.968 | --bye-- |
| 15 | 122 | 0.973 | (6,5) | 0.883 | --bye-- |
| 16 | 125 | 0.979 | (6,5) | 0.888 | --bye-- |
| 17 | 128 | 0.954 | (6,5) | 0.863 | --bye-- |
| 18 | 131 | 0.931 | (6,5) | 0.840 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |