| 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 | Northern Iowa | 30 to 9 | 424 | 131 |
| 3 | 220 | 1.842 | (1,1) | 1.842 | Iowa | 13 to 20 | 129 | 16 |
| 4 | 187 | 0.881 | (1,2) | 1.214 | Ohio U | 7 to 10 | 135 | 79 |
| 5 | 126 | 1.151 | (2,2) | 1.151 | Oklahoma St | 34 to 27 | 184 | 19 |
| 6 | 91 | 1.338 | (2,3) | 1.538 | Oklahoma | 20 to 50 | 11 | 13 |
| 7 | 48 | 1.725 | (3,3) | 1.725 | TCU | 27 to 14 | 82 | 70 |
| 8 | 35 | 1.836 | (4,3) | 1.693 | Cincinnati | 30 to 10 | 107 | 135 |
| 9 | 38 | 1.730 | (4,3) | 1.588 | --bye-- |
| 10 | 36 | 1.792 | (5,3) | 1.542 | Baylor | 30 to 18 | 116 | 133 |
| 11 | 44 | 1.677 | (5,4) | 1.566 | Kansas | 21 to 28 | 14 | 24 |
| 12 | 36 | 1.734 | (6,4) | 1.534 | Brigham Young | 45 to 13 | 75 | 74 |
| 13 | 39 | 1.681 | (6,5) | 1.590 | Texas | 16 to 26 | 5 | 4 |
| 14 | 31 | 1.843 | (7,5) | 1.677 | Kansas St | 42 to 35 | 24 | 17 |
| 15 | 31 | 1.770 | (7,5) | 1.603 | --bye-- |
| 16 | 31 | 1.765 | (7,5) | 1.599 | --bye-- |
| 17 | 31 | 1.764 | (7,5) | 1.597 | --bye-- |
| 18 | 37 | 1.645 | (7,6) | 1.568 | Memphis | 26 to 36 | 42 | 42 |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |