| 1. Round | 09/03/2015 | Seattle Sounders | - | New England Revolution | 3:0 | ||||
| 1. Round | 29/03/2015 | FC Dallas | - | Seattle Sounders | 0:0 | ||||
| 2. Round | 13/04/2015 | Los Angeles Galaxy | - | Seattle Sounders | 1:0 | ||||
| 4. Round | 20/06/2015 | Seattle Sounders | - | San Jose Earthquakes | 0:2 | ||||
| 4. Round | 25/06/2015 | Philadelphia Union | - | Seattle Sounders | 1:0 | ||||
| 6. Round | 23/08/2015 | Real Salt Lake | - | Seattle Sounders | 2:0 |
USA