| Yellow | VS Club | Date | |
|---|---|---|---|
| 5 | Portland Timbers | 08-08-2021 | Match details |
| 4 | Colorado Rapids | 22-08-2021 | Match details |
| 4 | Los Angeles FC | 18-07-2021 | Match details |
| 4 | Vancouver Whitecaps | 19-06-2021 | Match details |
| 4 | San Jose Earthquakes | 08-05-2021 | Match details |
| 3 | Vancouver Whitecaps | 30-08-2021 | Match details |
| 3 | Los Angeles Galaxy | 05-08-2021 | Match details |
| 3 | Houston Dynamo | 01-08-2021 | Match details |
| 3 | Los Angeles FC | 04-07-2021 | Match details |
