2021 Pac-12 Conference Leaders Fumbles Lost - Games vs. Unranked Teams Only (AP Poll) through 01/10/2022
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | Colorado | 10 | 6 | 4 | 66.67 |
| 1 | Stanford | 9 | 6 | 4 | 66.67 |
| 3 | California | 11 | 7 | 2 | 28.57 |
| 3 | Washington State | 9 | 7 | 3 | 42.86 |
| 3 | UCLA | 10 | 7 | 5 | 71.43 |
| 3 | USC | 9 | 7 | 6 | 85.71 |
| 7 | Oregon State | 10 | 10 | 4 | 40.00 |
| 8 | Arizona | 8 | 11 | 5 | 45.45 |
| 9 | Utah | 9 | 12 | 5 | 41.67 |
| 9 | Washington | 10 | 12 | 6 | 50.00 |
| 11 | Oregon | 10 | 13 | 6 | 46.15 |
| 11 | Arizona State | 11 | 13 | 9 | 69.23 |