| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Baldomero Toledo | 1 | 1 | - | - | 1 |
| David Gantar | 1 | 1 | - | - | 1 |
| Guillermo Guerrero | 1 | 1 | - | - | 1 |
| Drew Fischer | 1 | 1 | - | - | 1 |
| Ismail Elfath | 2 | 1 | - | - | 2 |
| Ted Unkel | 2 | 1 | - | - | 2 |
| Chris Penso | 2 | 1 | - | - | 2 |
| Marcos de Oliveira | 2 | 1 | - | - | 2 |
| Ramy Touchan | 2 | 1 | - | - | 2 |
| Alan Kelly | 3 | 1 | - | - | 3 |
| Jair Marrufo | 6 | 1 | - | - | 6 |
P = Matches played,
C = Cards .