2020 Pac-12 Conference Leaders Opponent Penalties - Games in December/January Only through 01/11/2021
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | California | 1 | 9 | 60 | 9.0 | 60.0 |
| 2 | Oregon State | 3 | 21 | 177 | 7.0 | 59.0 |
| 3 | Washington State | 2 | 12 | 115 | 6.0 | 57.5 |
| 4 | UCLA | 3 | 21 | 168 | 7.0 | 56.0 |
| 5 | Utah | 3 | 18 | 158 | 6.0 | 52.7 |
| 6 | Stanford | 3 | 18 | 153 | 6.0 | 51.0 |
| 6 | Arizona | 2 | 11 | 102 | 5.5 | 51.0 |
| 8 | Oregon | 3 | 17 | 151 | 5.7 | 50.3 |
| 9 | Arizona State | 3 | 19 | 146 | 6.3 | 48.7 |
| 10 | Colorado | 3 | 16 | 145 | 5.3 | 48.3 |
| 11 | USC | 3 | 14 | 130 | 4.7 | 43.3 |
| 12 | Washington | 1 | 3 | 25 | 3.0 | 25.0 |