| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Hilario Grajeda | 13 | 3 | 1 | - | 3.25 |
| Ted Unkel | 8 | 2 | - | - | 4 |
| Juan Guzman | 8 | 2 | - | - | 4 |
| Silviu Petrescu | 12 | 2 | - | - | 6 |
| Niko Bratsis | 1 | 1 | - | - | 1 |
| Drew Fischer | 8 | 1 | - | - | 8 |
| Michael Kennedy | 9 | 1 | - | - | 9 |
| Edvin Jurisevic | 9 | 1 | - | - | 9 |
| Allen Chapman | 10 | 1 | - | - | 10 |
| Sorin Stoica | 10 | 1 | - | - | 10 |
| Mark Geiger | 13 | 1 | - | - | 13 |
| Chris Penso | 14 | 1 | - | - | 14 |
| Armando Villarreal | 15 | 1 | - | - | 15 |
| Baldomero Toledo | 22 | 1 | - | - | 22 |
P = Matches played,
C = Cards .