2018 Pac-12 Conference Leaders Opponent Penalties - Games Won Only through 01/07/2019
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | Arizona | 5 | 36 | 362 | 7.2 | 72.4 |
| 2 | Oregon State | 2 | 16 | 140 | 8.0 | 70.0 |
| 3 | USC | 5 | 35 | 342 | 7.0 | 68.4 |
| 4 | Washington State | 11 | 80 | 673 | 7.3 | 61.2 |
| 5 | California | 7 | 44 | 386 | 6.3 | 55.1 |
| 6 | Arizona State | 7 | 43 | 382 | 6.1 | 54.6 |
| 7 | UCLA | 3 | 18 | 163 | 6.0 | 54.3 |
| 7 | Stanford | 9 | 52 | 489 | 5.8 | 54.3 |
| 9 | Colorado | 5 | 35 | 267 | 7.0 | 53.4 |
| 10 | Oregon | 9 | 53 | 374 | 5.9 | 41.6 |
| 11 | Utah | 9 | 37 | 344 | 4.1 | 38.2 |
| 12 | Washington | 10 | 42 | 354 | 4.2 | 35.4 |