2018 Mountain West Conference Leaders Opponent Penalties - Games in December/January Only through 01/07/2019
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | Hawai'i | 1 | 9 | 99 | 9.0 | 99.0 |
| 2 | Boise State | 1 | 6 | 50 | 6.0 | 50.0 |
| 3 | Fresno State | 2 | 9 | 70 | 4.5 | 35.0 |
| 4 | Nevada | 1 | 4 | 25 | 4.0 | 25.0 |
| 5 | Utah State | 1 | 2 | 20 | 2.0 | 20.0 |
| 6 | San Diego State | 1 | 0 | 0 | 0.0 | 0.0 |