| 1. Round | 29/03/2015 | FC Dallas | - | Seattle Sounders | 0:0 | ||||
| 4. Round | 25/06/2015 | Philadelphia Union | - | Seattle Sounders | 1:0 | ||||
| 4. Round | 29/06/2015 | Portland Timbers | - | Seattle Sounders | 4:1 | ||||
| 6. Round | 09/08/2015 | Los Angeles Galaxy | - | Seattle Sounders | 3:1 |  |
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| 6. Round | 16/08/2015 | Seattle Sounders | - | Orlando City | 4:0 | ||||
| 6. Round | 23/08/2015 | Real Salt Lake | - | Seattle Sounders | 2:0 | |
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| 6. Round | 30/08/2015 | Seattle Sounders | - | Portland Timbers | 2:1 | |
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| 7. Round | 06/09/2015 | Seattle Sounders | - | Toronto FC | 2:1 | ||||
| 7. Round | 13/09/2015 | San Jose Earthquakes | - | Seattle Sounders | 1:1 | |
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| 7. Round | 20/09/2015 | Vancouver Whitecaps | - | Seattle Sounders | 0:3 | ||||
| 7. Round | 27/09/2015 | Sporting Kansas City | - | Seattle Sounders | 1:1 | ||||
| 8. Round | 25/10/2015 | Seattle Sounders | - | Real Salt Lake | 3:1 |
Jamaica