| Yellow | VS Club | Date | |
|---|---|---|---|
| 5 | San Jose Earthquakes | 01-04-2018 | Match details |
| 4 | Columbus Crew | 02-09-2018 | Match details |
| 4 | Atlanta United | 15-04-2018 | Match details |
| 3 | Montreal Impact | 23-09-2018 | Match details |
New York City
| Yellow | VS Club | Date | |
|---|---|---|---|
| 5 | San Jose Earthquakes | 01-04-2018 | Match details |
| 4 | Columbus Crew | 02-09-2018 | Match details |
| 4 | Atlanta United | 15-04-2018 | Match details |
| 3 | Montreal Impact | 23-09-2018 | Match details |