| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Ted Unkel | 6 | 3 | - | - | 2 |
| Baldomero Toledo | 18 | 3 | 1 | - | 4.5 |
| Nima Saghafi | 5 | 2 | - | - | 2.5 |
| Allen Chapman | 17 | 2 | - | - | 8.5 |
| Henry Bejarano | 1 | 1 | - | - | 1 |
| Ionnis Stavrides | 1 | 1 | - | - | 1 |
| Mathieu Bourdeau | 2 | 1 | - | - | 2 |
| Edvin Jurisevic | 2 | 1 | - | - | 2 |
| Michael Kennedy | 2 | 1 | - | - | 2 |
| Juan Guzman | 5 | 1 | - | - | 5 |
| David Gantar | 6 | 1 | 1 | - | 3 |
| Sorin Stoica | 7 | 1 | - | - | 7 |
| Ricardo Salazar | 8 | 1 | - | - | 8 |
| Drew Fischer | 9 | 1 | - | - | 9 |
| Hilario Grajeda | 11 | 1 | - | - | 11 |
| Mark Geiger | 11 | 1 | - | - | 11 |
| Silviu Petrescu | 14 | 1 | - | - | 14 |
| Jair Marrufo | 19 | 0 | 1 | - | 19 |
P = Matches played,
C = Cards .