2018 Pac-12 Conference Leaders Fumbles Lost - Games vs. FBS Power 5 Conference Teams Only through 01/07/2019
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | Washington | 12 | 9 | 4 | 44.44 |
| 2 | Stanford | 10 | 10 | 4 | 40.00 |
| 2 | Washington State | 10 | 10 | 4 | 40.00 |
| 4 | UCLA | 10 | 11 | 5 | 45.45 |
| 5 | Arizona State | 10 | 15 | 4 | 26.67 |
| 5 | Utah | 11 | 15 | 8 | 53.33 |
| 7 | Colorado | 10 | 16 | 6 | 37.50 |
| 7 | California | 11 | 16 | 8 | 50.00 |
| 9 | Oregon | 10 | 17 | 9 | 52.94 |
| 10 | Arizona | 9 | 18 | 8 | 44.44 |
| 11 | Oregon State | 10 | 20 | 7 | 35.00 |
| 12 | USC | 10 | 22 | 8 | 36.36 |