| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Alan Kelly | 15 | 8 | - | - | 1.88 |
| Drew Fischer | 10 | 4 | - | - | 2.5 |
| Ricardo Salazar | 10 | 4 | - | - | 2.5 |
| Robert Sibiga | 12 | 4 | - | 1 | 2.4 |
| Mark Geiger | 13 | 3 | 1 | - | 3.25 |
| Baldomero Toledo | 19 | 3 | 1 | - | 4.75 |
| Marcos de Oliveira | 2 | 2 | - | - | 1 |
| Walter Lopez | 3 | 2 | - | - | 1.5 |
| Jose Carlos Rivero | 6 | 2 | 1 | - | 2 |
| Hilario Grajeda | 7 | 2 | 1 | 1 | 1.75 |
| Edvin Jurisevic | 8 | 2 | - | - | 4 |
| David Gantar | 9 | 2 | 1 | - | 3 |
| Ismail Elfath | 9 | 2 | - | - | 4.5 |
| Armando Villarreal | 9 | 2 | - | - | 4.5 |
| Chris Penso | 10 | 2 | - | - | 5 |
| Kevin Stott | 12 | 2 | - | - | 6 |
| Jonathan Moss | 1 | 1 | - | - | 1 |
| Szymon Marciniak | 1 | 1 | - | - | 1 |
| Mauricio Navarro | 1 | 1 | - | - | 1 |
| Jasen Anno | 2 | 1 | - | - | 2 |
| Mark Clattenburg | 2 | 1 | - | - | 2 |
| Alex Prus | 2 | 1 | - | - | 2 |
| Nima Saghafi | 2 | 1 | - | - | 2 |
| Anthony Taylor | 3 | 1 | - | - | 3 |
| Fotis Bazakos | 3 | 1 | - | - | 3 |
| Robert Madley | 3 | 1 | - | - | 3 |
| James Adcock | 3 | 1 | - | - | 3 |
| Juan Guzman | 3 | 1 | 1 | - | 1.5 |
| Roger East | 3 | 1 | - | - | 3 |
| Sorin Stoica | 4 | 1 | - | 1 | 2 |
| Abiodun Okulaja | 4 | 1 | - | - | 4 |
| Mike Jones | 4 | 1 | - | - | 4 |
| Joseph Dickerson | 4 | 1 | - | - | 4 |
| Michael Kennedy | 2 | 0 | 1 | - | 2 |
P = Matches played,
C = Cards .