| Yellow | VS Club | Date | |
|---|---|---|---|
| 5 | Toronto FC | 17-03-2018 | Match details |
| 4 | Atlanta United | 28-04-2018 | Match details |
| 3 | FC Dallas | 10-06-2018 | Match details |
| 3 | Los Angeles Galaxy | 21-05-2018 | Match details |
Montreal Impact
| Yellow | VS Club | Date | |
|---|---|---|---|
| 5 | Toronto FC | 17-03-2018 | Match details |
| 4 | Atlanta United | 28-04-2018 | Match details |
| 3 | FC Dallas | 10-06-2018 | Match details |
| 3 | Los Angeles Galaxy | 21-05-2018 | Match details |