| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Ricardo Salazar | 12 | 5 | - | - | 2.4 |
| Roberto Moreno | 3 | 3 | - | - | 1 |
| Drew Fischer | 15 | 3 | - | - | 5 |
| Joseph Dickerson | 5 | 2 | - | - | 2.5 |
| Sorin Stoica | 6 | 2 | - | - | 3 |
| Hilario Grajeda | 8 | 2 | - | - | 4 |
| David Gantar | 9 | 2 | - | - | 4.5 |
| Ismail Elfath | 9 | 2 | - | - | 4.5 |
| Baldomero Toledo | 11 | 2 | - | - | 5.5 |
| Jair Marrufo | 12 | 2 | - | - | 6 |
| Allen Chapman | 16 | 2 | - | - | 8 |
| Sandro Ricci | 1 | 1 | - | - | 1 |
| Matthew Foerster | 1 | 1 | - | - | 1 |
| Tim Ford | 1 | 1 | - | - | 1 |
| Mario Escobar | 1 | 1 | - | - | 1 |
| Victor Rivas | 2 | 1 | - | - | 2 |
| Ramy Touchan | 2 | 1 | - | - | 2 |
| Jorge Gonzalez | 4 | 1 | - | - | 4 |
| Walter Lopez | 5 | 1 | - | - | 5 |
| Marcos de Oliveira | 5 | 1 | - | - | 5 |
| Silviu Petrescu | 7 | 1 | - | - | 7 |
| Alan Kelly | 7 | 1 | - | - | 7 |
| Mark Geiger | 10 | 1 | - | - | 10 |
| Edvin Jurisevic | 10 | 1 | - | - | 10 |
| Robert Sibiga | 10 | 1 | - | - | 10 |
| Armando Villarreal | 11 | 1 | - | - | 11 |
| Chris Penso | 12 | 1 | - | - | 12 |
| Kevin Stott | 13 | 1 | - | - | 13 |
P = Matches played,
C = Cards .