| 1. Jornada | 18.03.2018 | FC Dallas | - | Seattle Sounders | 3:0 |  |
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| 2. Jornada | 22.04.2018 | Seattle Sounders | - | Minnesota United FC | 3:1 | ||||
| 2. Jornada | 30.04.2018 | Los Angeles FC | - | Seattle Sounders | 1:0 | ||||
| 3. Jornada | 05.05.2018 | Seattle Sounders | - | Columbus Crew | 0:0 | ||||
| 3. Jornada | 13.05.2018 | Portland Timbers | - | Seattle Sounders | 1:0 | ||||
| 3. Jornada | 26.05.2018 | Seattle Sounders | - | Real Salt Lake | 0:1 | ||||
| 4. Jornada | 03.06.2018 | Real Salt Lake | - | Seattle Sounders | 2:0 | ||||
| 4. Jornada | 10.06.2018 | Seattle Sounders | - | D.C. United | 2:1 | ||||
| 4. Jornada | 14.06.2018 | New York RB | - | Seattle Sounders | 2:1 | ||||
| 4. Jornada | 24.06.2018 | Seattle Sounders | - | Chicago Fire | 1:1 |  |
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| 4. Jornada | 30.06.2018 | Seattle Sounders | - | Portland Timbers | 2:3 |  |
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| 5. Jornada | 05.07.2018 | Colorado Rapids | - | Seattle Sounders | 1:2 | ||||
| 5. Jornada | 08.07.2018 | New England Revolution | - | Seattle Sounders | 0:0 | ||||
| 5. Jornada | 26.07.2018 | San Jose Earthquakes | - | Seattle Sounders | 0:1 |
Estados Unidos
