| Yellow | VS Club | Date | |
|---|---|---|---|
| 5 | Atlanta United | 20-06-2021 | Match details |
| 4 | Chicago Fire | 27-06-2021 | Match details |
| 4 | Columbus Crew | 18-04-2021 | Match details |
| 3 | New England Revolution | 08-08-2021 | Match details |
| 3 | Toronto FC | 05-08-2021 | Match details |
| 3 | New England Revolution | 13-05-2021 | Match details |
| 3 | Chicago Fire | 08-05-2021 | Match details |
