| 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 | 239 |
| 2 | 148 | 0.515 | (1,1) | 0.515 | Wyoming | 7 to 31 | 64 | 155 |
| 3 | 411 | -0.192 | (2,1) | -0.525 | E Washington | 17 to 14 | 609 | 170 |
| 4 | 280 | 0.233 | (2,2) | 0.233 | Utah Tech | 9 to 20 | 255 | 278 |
| 5 | 217 | 0.526 | (2,2) | 0.526 | --bye-- |
| 6 | 242 | 0.348 | (2,3) | 0.548 | North Dakota | 7 to 35 | 184 | 117 |
| 7 | 205 | 0.546 | (2,4) | 0.880 | S Dakota St | 3 to 31 | 35 | 87 |
| 8 | 215 | 0.456 | (2,5) | 0.884 | South Dakota | 14 to 17 | 99 | 80 |
| 9 | 227 | 0.371 | (2,6) | 0.871 | S Illinois | 17 to 31 | 134 | 141 |
| 10 | 246 | 0.297 | (2,7) | 0.853 | Illinois St | 16 to 31 | 113 | 67 |
| 11 | 239 | 0.334 | (3,7) | 0.734 | Murray St | 31 to 14 | 344 | 299 |
| 12 | 227 | 0.385 | (3,8) | 0.840 | N Dakota St | 16 to 48 | 35 | 47 |
| 13 | 246 | 0.306 | (3,9) | 0.806 | Youngstown St | 32 to 35 | 129 | 126 |
| 14 | 237 | 0.329 | (3,9) | 0.829 | --bye-- |
| 15 | 230 | 0.337 | (3,9) | 0.837 | --bye-- |
| 16 | 233 | 0.337 | (3,9) | 0.837 | --bye-- |
| 17 | 228 | 0.352 | (3,9) | 0.852 | --bye-- |
| 18 | 228 | 0.354 | (3,9) | 0.854 | --bye-- |
| 19 | 228 | 0.353 | (3,9) | 0.853 | --bye-- |
| 20 | 229 | 0.343 | (3,9) | 0.843 | --bye-- |
| 21 | 229 | 0.343 | (3,9) | 0.843 | --bye-- |