| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Carlos Chandia | 1 | 1 | - | - | 1 |
| Drew Fischer | 1 | 1 | - | - | 1 |
| Jose Luis Gonzalez Gonzalez | 1 | 1 | - | - | 1 |
| Jon Freeman | 1 | 1 | - | - | 1 |
| Pablo Pozo | 1 | 1 | - | - | 1 |
| Mauricio Navarro | 2 | 1 | - | - | 2 |
| Ricardo Salazar | 2 | 1 | - | - | 2 |
| Baldomero Toledo | 4 | 1 | - | - | 4 |
| Marcos de Oliveira | 5 | 1 | - | - | 5 |
P = Matches played,
C = Cards .