| 1. Round | 25/03/2018 | Swope Park Rangers | - | Seattle Sounders 2 | 4:2 | ||||
| 4. Round | 18/06/2018 | Fresno FC | - | Swope Park Rangers | 4:1 | ||||
| 5. Round | 11/07/2018 | Swope Park Rangers | - | Sacramento Republic | 1:3 | ||||
| 5. Round | 15/07/2018 | Portland Timbers 2 | - | Swope Park Rangers | 2:1 | ||||
| 5. Round | 19/07/2018 | Swope Park Rangers | - | Orange County SC | 0:4 | ||||
| 5. Round | 22/07/2018 | Swope Park Rangers | - | Rio Grande Valley FC | 0:0 | ||||
| 8. Round | 04/10/2018 | Sacramento Republic | - | Swope Park Rangers | 3:1 | ||||
| 8. Round | 14/10/2018 | Swope Park Rangers | - | Los Angeles Galaxy II | 5:1 |
USA