| 3. Round | 10/05/2012 | FC Dallas | - | Seattle Sounders | 0:2 | ||||
| 3. Round | 13/05/2012 | Seattle Sounders | - | Real Salt Lake | 0:1 | ||||
| 3. Round | 27/05/2012 | CD Chivas | - | Seattle Sounders | 1:1 | ||||
| 4. Round | 17/06/2012 | Impact de Montréal | - | Seattle Sounders | 4:1 | ||||
| 4. Round | 24/06/2012 | Portland Timbers | - | Seattle Sounders | 2:1 | ||||
| 5. Round | 05/07/2012 | Real Salt Lake | - | Seattle Sounders | 0:0 | ||||
| 5. Round | 08/07/2012 | Seattle Sounders | - | Colorado Rapids | 2:1 | ||||
| 7. Round | 08/09/2012 | Seattle Sounders | - | CD Chivas | 2:1 |
Trinidad & Tobago