2015 Pac-12 Conference Leaders Fumbles Lost - Games vs. Conference Teams Only through 01/11/2016
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | Oregon State | 9 | 6 | 3 | 50.00 |
| 2 | Oregon | 9 | 9 | 4 | 44.44 |
| 2 | Stanford | 10 | 9 | 4 | 44.44 |
| 2 | California | 9 | 9 | 5 | 55.56 |
| 5 | UCLA | 9 | 10 | 6 | 60.00 |
| 6 | USC | 10 | 11 | 5 | 45.45 |
| 6 | Washington | 9 | 11 | 7 | 63.64 |
| 8 | Arizona State | 9 | 15 | 6 | 40.00 |
| 9 | Colorado | 9 | 16 | 6 | 37.50 |
| 10 | Utah | 9 | 19 | 8 | 42.11 |
| 10 | Washington State | 9 | 19 | 11 | 57.89 |
| 12 | Arizona | 9 | 20 | 7 | 35.00 |