Referees: Major League Soccer
Major League Soccer · Season 2017/18
| Referee | MP | Yellows/m | Fouls/m | Yellows/100 fouls | Pens/m |
|---|---|---|---|---|---|
| Alan KellyIreland | 25 | 3.36 | 23.7 | 14.2 | 0.12 |
| Robert SibigaUSA | 24 | 3.96 | 24.6 | 16.1 | 0.17 |
| Chris PensoUSA | 24 | 4.25 | 24.3 | 17.5 | 0.29 |
| Allen ChapmanUSA | 22 | 3.55 | 21.4 | 16.6 | 0.45 |
| Ismail ElfathUSA | 22 | 2.95 | 27.6 | 10.7 | 0.23 |
| Jose Carlos RiveroUSA | 21 | 4.48 | 24.0 | 18.7 | 0.14 |
| Ricardo SalazarUSA | 21 | 3.38 | 21.8 | 15.5 | 0.38 |
| Kevin StottUSA | 20 | 2.25 | 20.6 | 10.9 | 0.25 |
| Baldomero ToledoUSA | 20 | 4.25 | 26.1 | 16.3 | 0.40 |
| Villarrea ArmandoUSA | 18 | 3.33 | 22.6 | 14.8 | 0.11 |
| Hilario GrajedaUSA | 17 | 4.06 | 28.8 | 14.1 | 0.00 |
| Silviu PetrescuCanada | 15 | 4.27 | 27.3 | 15.6 | 0.13 |
| Drew FischerCanada | 15 | 3.67 | 26.9 | 13.6 | 0.20 |
| Mark GeigerUSA | 14 | 2.71 | 25.9 | 10.5 | 0.29 |
| Nima SaghafiUSA | 14 | 3.64 | 26.1 | 14.0 | 0.36 |
| Jorge GonzalezUSA | 13 | 4.77 | 26.8 | 17.8 | 0.23 |
| Jair MarrufoUSA | 13 | 2.69 | 22.2 | 12.1 | 0.38 |
| Sorin StoicaUSA | 12 | 3.58 | 25.2 | 14.2 | 0.17 |
| Ted UnkelUSA | 11 | 3.55 | 21.1 | 16.8 | 0.45 |
| Fotis BazakosUSA | 10 | 4.30 | 26.5 | 16.2 | 0.40 |
| David GantarCanada | 7 | 3.14 | 25.0 | 12.6 | 0.00 |
| Rubiel VazquezUSA | 4 | 3.25 | 19.3 | 16.9 | 0.50 |
| Marcos de OliveiraUSA | 3 | 3.33 | 24.7 | 13.5 | 0.00 |
| Alex ChilowiczUSA | 3 | 3.67 | 25.0 | 14.7 | 0.00 |