| Yellow | VS Club | Date | |
|---|---|---|---|
| 5 | Vancouver Whitecaps | 10-06-2018 | Match details |
| 5 | Chicago Fire | 27-05-2018 | Match details |
| 5 | Atlanta United | 13-05-2018 | Match details |
| 4 | Houston Dynamo | 23-09-2018 | Match details |
| 4 | Columbus Crew | 22-07-2018 | Match details |
| 4 | Philadelphia Union | 14-04-2018 | Match details |
| 3 | Atlanta United | 25-08-2018 | Match details |
| 3 | New England Revolution | 05-08-2018 | Match details |
