| 1. Jornada | 04.03.2018 | Seattle Sounders | - | Los Angeles FC | 0:1 | ||||
| 1. Jornada | 18.03.2018 | FC Dallas | - | Seattle Sounders | 3:0 | ||||
| 2. Jornada | 01.04.2018 | Seattle Sounders | - | Impact de Montréal | 0:1 |  |
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| 2. Jornada | 15.04.2018 | Sporting Kansas City | - | Seattle Sounders | 2:2 | ||||
| 2. Jornada | 22.04.2018 | Seattle Sounders | - | Minnesota United FC | 3:1 | ||||
| 5. Jornada | 26.07.2018 | San Jose Earthquakes | - | Seattle Sounders | 0:1 | ||||
| 5. Jornada | 29.07.2018 | Seattle Sounders | - | New York City FC | 3:1 | ||||
| 6. Jornada | 05.08.2018 | Minnesota United FC | - | Seattle Sounders | 1:2 | ||||
| 6. Jornada | 13.08.2018 | Seattle Sounders | - | FC Dallas | 2:1 | ||||
| 6. Jornada | 27.08.2018 | Portland Timbers | - | Seattle Sounders | 0:1 | ||||
| 7. Jornada | 01.09.2018 | Seattle Sounders | - | Sporting Kansas City | 3:1 | ||||
| 7. Jornada | 20.09.2018 | Seattle Sounders | - | Philadelphia Union | 0:1 | ||||
| 7. Jornada | 24.09.2018 | Los Angeles Galaxy | - | Seattle Sounders | 3:0 |
Panamá
