2. Round | 01/04/2018 | Seattle Sounders | - | Impact de Montréal | 0:1 | ||||
3. Round | 10/05/2018 | Toronto FC | - | Seattle Sounders | 1:2 | ||||
3. Round | 26/05/2018 | Seattle Sounders | - | Real Salt Lake | 0:1 | ||||
4. Round | 14/06/2018 | New York RB | - | Seattle Sounders | 2:1 | ||||
4. Round | 30/06/2018 | Seattle Sounders | - | Portland Timbers | 2:3 | ||||
5. Round | 05/07/2018 | Colorado Rapids | - | Seattle Sounders | 1:2 | ||||
6. Round | 05/08/2018 | Minnesota United FC | - | Seattle Sounders | 1:2 | ||||
6. Round | 13/08/2018 | Seattle Sounders | - | FC Dallas | 2:1 | ||||
8. Round | 18/10/2018 | Orlando City | - | Seattle Sounders | 1:2 | ||||
8. Round | 21/10/2018 | Houston Dynamo | - | Seattle Sounders | 2:3 | ||||
8. Round | 28/10/2018 | Seattle Sounders | - | San Jose Earthquakes | 2:1 |