2018 Pac-12 Conference Leaders Fumbles Lost - Games Lost Only through 01/07/2019
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | Washington | 4 | 2 | 1 | 50.00 |
| 1 | Washington State | 2 | 3 | 1 | 33.33 |
| 3 | Stanford | 4 | 6 | 3 | 50.00 |
| 3 | Arizona State | 6 | 11 | 3 | 27.27 |
| 5 | Oregon | 4 | 9 | 5 | 55.56 |
| 5 | Arizona | 7 | 10 | 5 | 50.00 |
| 5 | USC | 7 | 12 | 5 | 41.67 |
| 8 | Utah | 5 | 7 | 6 | 85.71 |
| 8 | California | 6 | 10 | 6 | 60.00 |
| 8 | UCLA | 9 | 11 | 6 | 54.55 |
| 8 | Colorado | 7 | 14 | 6 | 42.86 |
| 12 | Oregon State | 10 | 19 | 8 | 42.11 |