| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 0 | 9 | 0.000 | (0,0) | 0.000 | --bye-- |
| 1 | 518 | -0.500 | (0,1) | 0.500 | C Michigan | 14 to 16 | 7 | 132 |
| 2 | 585 | -0.813 | (0,2) | 0.187 | Texas | 7 to 38 | 317 | 17 |
| 3 | 533 | -0.783 | (0,2) | 0.217 | --bye-- |
| 4 | 209 | 0.546 | (1,2) | 0.879 | Idaho | 31 to 28 | 172 | 207 |
| 5 | 195 | 0.614 | (1,3) | 1.114 | Stanford | 29 to 30 | 119 | 92 |
| 6 | 160 | 0.809 | (2,3) | 1.009 | New Mexico | 35 to 28 | 91 | 51 |
| 7 | 180 | 0.713 | (2,4) | 1.047 | Wyoming | 28 to 35 | 98 | 155 |
| 8 | 181 | 0.648 | (2,5) | 1.076 | Utah St | 25 to 30 | 77 | 106 |
| 9 | 159 | 0.714 | (2,5) | 1.143 | --bye-- |
| 10 | 128 | 0.973 | (3,5) | 1.223 | Hawaii | 45 to 38 | 85 | 65 |
| 11 | 145 | 0.841 | (3,6) | 1.175 | Air Force | 16 to 26 | 136 | 145 |
| 12 | 160 | 0.714 | (3,7) | 1.114 | Nevada | 10 to 55 | 183 | 163 |
| 13 | 169 | 0.694 | (3,8) | 1.149 | San Diego St | 3 to 25 | 47 | 58 |
| 14 | 175 | 0.648 | (3,9) | 1.148 | Fresno St | 14 to 41 | 81 | 77 |
| 15 | 166 | 0.661 | (3,9) | 1.161 | --bye-- |
| 16 | 167 | 0.647 | (3,9) | 1.147 | --bye-- |
| 17 | 169 | 0.639 | (3,9) | 1.139 | --bye-- |
| 18 | 169 | 0.629 | (3,9) | 1.129 | --bye-- |
| 19 | 168 | 0.634 | (3,9) | 1.134 | --bye-- |
| 20 | | | | | --bye-- |
| 21 | | | | | --bye-- |