2021 Pac-12 Conference Leaders Opponent Penalties - Games in October Only through 01/10/2022
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | Utah | 4 | 39 | 364 | 9.8 | 91.0 |
| 2 | Oregon | 4 | 38 | 261 | 9.5 | 65.3 |
| 3 | UCLA | 5 | 35 | 262 | 7.0 | 52.4 |
| 4 | Colorado | 4 | 32 | 293 | 8.0 | 73.3 |
| 5 | Arizona | 4 | 27 | 316 | 6.8 | 79.0 |
| 5 | Stanford | 4 | 27 | 253 | 6.8 | 63.3 |
| 7 | USC | 4 | 25 | 288 | 6.3 | 72.0 |
| 8 | Washington | 4 | 23 | 172 | 5.8 | 43.0 |
| 8 | Washington State | 5 | 23 | 150 | 4.6 | 30.0 |
| 10 | Arizona State | 4 | 21 | 206 | 5.3 | 51.5 |
| 11 | California | 4 | 19 | 164 | 4.8 | 41.0 |
| 12 | Oregon State | 4 | 11 | 119 | 2.8 | 29.8 |