2017 Pac-12 Conference Leaders Opponent Penalties - Games in December/January Only through 01/08/2018
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | USC | 2 | 10 | 103 | 5.0 | 51.5 |
| 2 | Utah | 1 | 5 | 51 | 5.0 | 51.0 |
| 3 | Washington State | 1 | 6 | 50 | 6.0 | 50.0 |
| 3 | Arizona | 1 | 5 | 50 | 5.0 | 50.0 |
| 3 | Oregon | 1 | 4 | 50 | 4.0 | 50.0 |
| 6 | Arizona State | 1 | 5 | 45 | 5.0 | 45.0 |
| 7 | Stanford | 2 | 10 | 80 | 5.0 | 40.0 |
| 8 | UCLA | 1 | 2 | 20 | 2.0 | 20.0 |
| 8 | Washington | 1 | 2 | 20 | 2.0 | 20.0 |