2017 Pac-12 Conference Leaders Fumbles Lost - Games vs. Unranked Teams Only (AP Poll) through 01/08/2018
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | Stanford | 9 | 10 | 4 | 40.00 |
| 1 | Washington | 11 | 12 | 4 | 33.33 |
| 3 | Arizona State | 9 | 9 | 5 | 55.56 |
| 3 | Colorado | 10 | 11 | 5 | 45.45 |
| 3 | California | 9 | 13 | 5 | 38.46 |
| 6 | UCLA | 9 | 12 | 7 | 58.33 |
| 7 | Arizona | 12 | 10 | 8 | 80.00 |
| 7 | Washington State | 8 | 14 | 8 | 57.14 |
| 7 | USC | 10 | 15 | 8 | 53.33 |
| 10 | Oregon | 10 | 16 | 9 | 56.25 |
| 11 | Oregon State | 9 | 15 | 10 | 66.67 |
| 12 | Utah | 10 | 21 | 12 | 57.14 |