2011 Pac-12 Conference Leaders Fumbles Lost - Games in October Only through 01/09/2012
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | Oregon | 4 | 4 | 1 | 25.00 |
| 2 | Washington | 4 | 3 | 2 | 66.67 |
| 2 | Stanford | 5 | 5 | 2 | 40.00 |
| 2 | Arizona State | 4 | 6 | 2 | 33.33 |
| 5 | Arizona | 4 | 5 | 3 | 60.00 |
| 5 | California | 4 | 6 | 3 | 50.00 |
| 5 | USC | 4 | 6 | 3 | 50.00 |
| 5 | Washington State | 5 | 8 | 3 | 37.50 |
| 9 | Colorado | 5 | 6 | 4 | 66.67 |
| 9 | Oregon State | 5 | 10 | 4 | 40.00 |
| 11 | UCLA | 4 | 10 | 6 | 60.00 |
| 12 | Utah | 5 | 12 | 7 | 58.33 |