1. Round | 17/03/2018 | Seattle Sounders 2 | - | Portland Timbers 2 | 2:1 | ||||
1. Round | 25/03/2018 | Swope Park Rangers | - | Seattle Sounders 2 | 4:2 | ||||
1. Round | 29/03/2018 | Seattle Sounders 2 | - | Fresno FC | 0:1 | ||||
2. Round | 08/04/2018 | Sacramento Republic | - | Seattle Sounders 2 | 1:0 | ||||
2. Round | 12/04/2018 | Seattle Sounders 2 | - | Real Monarchs SLC | 1:3 | ||||
2. Round | 15/04/2018 | Seattle Sounders 2 | - | Rio Grande Valley FC | 3:2 | ||||
2. Round | 22/04/2018 | Colorado Springs Switchbacks | - | Seattle Sounders 2 | 0:0 | ||||
3. Round | 06/05/2018 | Seattle Sounders 2 | - | Sacramento Republic | 1:2 | ||||
4. Round | 10/06/2018 | Seattle Sounders 2 | - | OKC Energy FC | 2:1 | ||||
6. Round | 05/08/2018 | Saint Louis FC | - | Seattle Sounders 2 | 2:0 |