2019 Pac-12 Conference Leaders Fumbles Lost - Games in August/September Only through 01/13/2020
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | Oregon State | 4 | 1 | 0 | 0.00 |
| 2 | Arizona | 4 | 2 | 1 | 50.00 |
| 3 | Oregon | 4 | 3 | 2 | 66.67 |
| 3 | Stanford | 5 | 3 | 2 | 66.67 |
| 3 | Utah | 5 | 3 | 2 | 66.67 |
| 3 | Colorado | 4 | 6 | 2 | 33.33 |
| 7 | Arizona State | 5 | 3 | 3 | 100.00 |
| 7 | California | 5 | 5 | 3 | 60.00 |
| 7 | Washington | 5 | 8 | 3 | 37.50 |
| 10 | Washington State | 5 | 4 | 4 | 100.00 |
| 10 | USC | 5 | 7 | 4 | 57.14 |
| 10 | UCLA | 5 | 8 | 4 | 50.00 |