2021 Mountain West Conference Leaders Rushing Defense - Games vs. Unranked Teams Only (AP Poll) through 01/10/2022
| Name | G | Att | Yards | Avg. | TD | Att/G | Yards/G | |
|---|---|---|---|---|---|---|---|---|
| 1 | San Diego State | 12 | 354 | 989 | 2.79 | 5 | 29.50 | 82.42 |
| 2 | Air Force | 11 | 323 | 1039 | 3.22 | 14 | 29.36 | 94.45 |
| 3 | Fresno State | 11 | 372 | 1271 | 3.42 | 10 | 33.82 | 115.55 |
| 4 | New Mexico | 10 | 388 | 1397 | 3.60 | 13 | 38.80 | 139.70 |
| 5 | San Jose State | 10 | 376 | 1406 | 3.74 | 7 | 37.60 | 140.60 |
| 6 | Boise State | 8 | 314 | 1194 | 3.80 | 8 | 39.25 | 149.25 |
| 7 | Utah State | 12 | 441 | 1896 | 4.30 | 17 | 36.75 | 158.00 |
| 8 | Hawai'i | 11 | 405 | 1746 | 4.31 | 21 | 36.82 | 158.73 |
| 9 | Wyoming | 12 | 483 | 2168 | 4.49 | 17 | 40.25 | 180.67 |
| 10 | UNLV | 10 | 379 | 1823 | 4.81 | 18 | 37.90 | 182.30 |
| 11 | Colorado State | 10 | 414 | 1830 | 4.42 | 17 | 41.40 | 183.00 |
| 12 | Nevada | 12 | 477 | 2239 | 4.69 | 22 | 39.75 | 186.58 |