2021 Pac-12 Conference Leaders Fumbles Lost - Games vs. Conference Teams Only through 01/10/2022
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | Colorado | 9 | 5 | 2 | 40.00 |
| 1 | California | 9 | 6 | 2 | 33.33 |
| 3 | Washington State | 9 | 6 | 3 | 50.00 |
| 4 | Arizona | 9 | 9 | 4 | 44.44 |
| 4 | UCLA | 9 | 9 | 4 | 44.44 |
| 4 | Oregon State | 9 | 9 | 4 | 44.44 |
| 4 | Utah | 10 | 14 | 4 | 28.57 |
| 8 | USC | 9 | 6 | 5 | 83.33 |
| 8 | Stanford | 9 | 7 | 5 | 71.43 |
| 8 | Washington | 9 | 11 | 5 | 45.45 |
| 8 | Oregon | 10 | 12 | 5 | 41.67 |
| 12 | Arizona State | 9 | 10 | 8 | 80.00 |