| Penalties | Club | VS Club | Date | |
|---|---|---|---|---|
| 5 | Houston SaberCats | San Diego Legions | 05-05-2018 | Match details |
| 4 | Austin Gilgronis | Seattle Seawolves | 09-06-2018 | Match details |
| 4 | San Diego Legions | Austin Gilgronis | 18-06-2018 | Match details |
| 4 | New Orleans Gold | Utah Warriors | 16-06-2018 | Match details |
| 3 | Colorado Raptors | Seattle Seawolves | 29-04-2018 | Match details |
| 2 | Seattle Seawolves | New Orleans Gold | 28-05-2018 | Match details |
| 1 | Utah Warriors | San Diego Legions | 30-04-2018 | Match details |
