| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Hilario Grajeda | 12 | 3 | - | - | 4 |
| Mark Geiger | 11 | 2 | - | - | 5.5 |
| Sorin Stoica | 2 | 1 | - | - | 2 |
| Alan Kelly | 3 | 1 | - | - | 3 |
| Edvin Jurisevic | 6 | 1 | - | - | 6 |
| Kevin Stott | 6 | 1 | - | - | 6 |
| Jair Marrufo | 11 | 1 | - | - | 11 |
| Ricardo Salazar | 14 | 1 | - | - | 14 |
| Baldomero Toledo | 12 | 0 | 1 | - | 12 |
P = Matches played,
C = Cards .