2018 Pac-12 Conference Leaders Opponent Penalties - Games in November Only through 01/07/2019
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | Colorado | 4 | 28 | 278 | 7.0 | 69.5 |
| 2 | Oregon | 4 | 26 | 166 | 6.5 | 41.5 |
| 3 | Utah | 5 | 24 | 228 | 4.8 | 45.6 |
| 4 | UCLA | 4 | 23 | 217 | 5.8 | 54.3 |
| 4 | Oregon State | 4 | 23 | 217 | 5.8 | 54.3 |
| 4 | Arizona State | 4 | 23 | 203 | 5.8 | 50.8 |
| 7 | Stanford | 3 | 20 | 182 | 6.7 | 60.7 |
| 8 | California | 3 | 19 | 189 | 6.3 | 63.0 |
| 8 | Washington State | 4 | 19 | 198 | 4.8 | 49.5 |
| 10 | Arizona | 3 | 17 | 161 | 5.7 | 53.7 |
| 11 | USC | 4 | 13 | 116 | 3.3 | 29.0 |
| 11 | Washington | 4 | 13 | 84 | 3.3 | 21.0 |