| Yellow | VS Club | Date | |
|---|---|---|---|
| 6 | Sporting Kansas City | 15-08-2021 | Match details |
| 5 | New England Revolution | 28-06-2021 | Match details |
| 4 | Houston Dynamo | 22-08-2021 | Match details |
| 4 | Sporting Kansas City | 01-08-2021 | Match details |
| 3 | Seattle Sounders | 19-08-2021 | Match details |
| 3 | Los Angeles Galaxy | 08-07-2021 | Match details |
