| 3. Round | 19/05/2019 | Philadelphia Union | - | Seattle Sounders | 0:0 |  |
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| 4. Round | 06/06/2019 | Impact de Montréal | - | Seattle Sounders | 2:1 | ||||
| 6. Round | 15/08/2019 | Real Salt Lake | - | Seattle Sounders | 3:0 | ||||
| 7. Round | 08/09/2019 | Colorado Rapids | - | Seattle Sounders | 2:0 |
USA