| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Ted Unkel | 13 | 5 | - | - | 2.6 |
| Silviu Petrescu | 15 | 3 | - | - | 5 |
| Edvin Jurisevic | 4 | 2 | - | - | 2 |
| Baldomero Toledo | 7 | 2 | - | - | 3.5 |
| Hilario Grajeda | 8 | 2 | - | - | 4 |
| Alan Kelly | 10 | 2 | - | - | 5 |
| Allen Chapman | 13 | 2 | - | - | 6.5 |
| Lukasz Szpala | 1 | 1 | - | - | 1 |
| Andres Pfefferkorn | 1 | 1 | - | - | 1 |
| Rubiel Vazquez | 4 | 1 | - | - | 4 |
| Nima Saghafi | 5 | 1 | - | - | 5 |
| Sorin Stoica | 7 | 1 | - | - | 7 |
| Drew Fischer | 7 | 1 | - | - | 7 |
| Juan Guzman | 7 | 1 | - | - | 7 |
| Robert Sibiga | 8 | 1 | - | - | 8 |
| Ismail Elfath | 13 | 1 | - | 1 | 6.5 |
P = Matches played,
C = Cards .