| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Ismail Elfath | 12 | 4 | - | - | 3 |
| Armando Villarreal | 7 | 3 | - | - | 2.33 |
| Kevin Stott | 14 | 3 | - | - | 4.67 |
| Silviu Petrescu | 16 | 3 | - | - | 5.33 |
| Mark Geiger | 17 | 3 | - | - | 5.67 |
| Nima Saghafi | 5 | 2 | - | - | 2.5 |
| Juan Guzman | 9 | 2 | - | - | 4.5 |
| Jose Carlos Rivero | 15 | 2 | - | - | 7.5 |
| Gavin Ward | 1 | 1 | - | - | 1 |
| Marcos de Oliveira | 2 | 1 | - | - | 2 |
| Joseph Dickerson | 3 | 1 | - | - | 3 |
| David Gantar | 9 | 1 | - | - | 9 |
| Edvin Jurisevic | 9 | 1 | - | - | 9 |
| Allen Chapman | 10 | 1 | - | - | 10 |
| Alan Kelly | 13 | 1 | - | - | 13 |
| Hilario Grajeda | 15 | 1 | - | - | 15 |
| Baldomero Toledo | 15 | 1 | - | - | 15 |
| Chris Penso | 15 | 1 | - | 1 | 7.5 |
P = Matches played,
C = Cards .