2018 Pac-12 Conference Leaders Fumbles Lost - Games Won Only through 01/07/2019
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | UCLA | 3 | 4 | 1 | 25.00 |
| 1 | Oregon State | 2 | 4 | 1 | 25.00 |
| 1 | Stanford | 9 | 5 | 1 | 20.00 |
| 1 | Arizona State | 7 | 6 | 1 | 16.67 |
| 1 | Colorado | 5 | 9 | 1 | 11.11 |
| 6 | Washington State | 11 | 8 | 4 | 50.00 |
| 6 | Washington | 10 | 9 | 4 | 44.44 |
| 6 | Arizona | 5 | 11 | 4 | 36.36 |
| 9 | California | 7 | 11 | 5 | 45.45 |
| 9 | Oregon | 9 | 12 | 5 | 41.67 |
| 9 | USC | 5 | 12 | 5 | 41.67 |
| 12 | Utah | 9 | 15 | 8 | 53.33 |