| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Geoff Gamble | 1 | 1 | - | - | 1 |
| Ravshan Irmatov | 1 | 1 | - | - | 1 |
| Shamsui Maidin | 1 | 1 | - | - | 1 |
| Benito Archundia | 2 | 1 | - | - | 2 |
| Marco Rodriguez | 2 | 1 | - | - | 2 |
| Elias Bazakos | 2 | 1 | - | - | 2 |
| Roberto Moreno | 2 | 1 | - | - | 2 |
| Enrico Wijngaarde | 2 | 1 | - | - | 2 |
| Walter Lopez | 3 | 1 | - | - | 3 |
| Mark Geiger | 3 | 1 | - | - | 3 |
| Chris Penso | 3 | 1 | - | - | 3 |
| Jair Marrufo | 7 | 1 | - | - | 7 |
P = Matches played,
C = Cards .