| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 5 | Columbus Crew | 09-04-2011 | League Section | Match details |
| 4 | Portland Timbers | 04-06-2011 | League Section | Match details |
| 3 | Portland Timbers | 24-08-2011 | League Section | Match details |
| 3 | Seattle Sounders | 13-08-2011 | League Section | Match details |
| 3 | Columbus Crew | 28-05-2011 | League Section | Match details |
