Western Michigan - MAC - FBS - NCAA
| 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 | St Francis PA | 35 to 17 | 424 | 381 |
| 3 | 704 | -7.719 | (1,1) | -7.719 | Syracuse | 7 to 48 | 681 | 86 |
| 4 | 149 | 1.122 | (1,2) | 1.456 | Iowa | 10 to 41 | 50 | 16 |
| 5 | 222 | 0.587 | (1,3) | 1.087 | Toledo | 31 to 49 | 101 | 51 |
| 6 | 144 | 0.936 | (2,3) | 1.136 | Ball St | 42 to 24 | 200 | 182 |
| 7 | 165 | 0.806 | (2,4) | 1.139 | Mississippi St | 28 to 41 | 89 | 85 |
| 8 | 164 | 0.807 | (2,5) | 1.236 | Miami OH | 21 to 34 | 71 | 65 |
| 9 | 174 | 0.714 | (2,6) | 1.214 | Ohio U | 17 to 20 | 73 | 79 |
| 10 | 151 | 0.853 | (3,6) | 1.187 | Eastern Michigan | 45 to 21 | 160 | 176 |
| 11 | 158 | 0.826 | (3,6) | 1.159 | --bye-- |
| 12 | 125 | 0.979 | (4,6) | 1.179 | Central Michigan | 38 to 28 | 131 | 154 |
| 13 | 150 | 0.866 | (4,7) | 1.138 | Northern Illinois | 0 to 24 | 141 | 130 |
| 14 | 152 | 0.879 | (4,8) | 1.212 | Bowling Green | 10 to 34 | 79 | 94 |
| 15 | 158 | 0.794 | (4,8) | 1.127 | --bye-- |
| 16 | 156 | 0.792 | (4,8) | 1.125 | --bye-- |
| 17 | 160 | 0.768 | (4,8) | 1.101 | --bye-- |
| 18 | 164 | 0.726 | (4,8) | 1.060 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |