| 4. Round | 10/06/2018 | Colorado Springs Switchbacks | - | Swope Park Rangers | 0:1 | ||||
| 4. Round | 24/06/2018 | Swope Park Rangers | - | Las Vegas Lights FC | 3:2 | ||||
| 5. Round | 06/07/2018 | Seattle Sounders 2 | - | Swope Park Rangers | 0:2 | ||||
| 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 | ||||
| 6. Round | 02/08/2018 | Los Angeles Galaxy II | - | Swope Park Rangers | 1:1 | ||||
| 6. Round | 05/08/2018 | Orange County SC | - | Swope Park Rangers | 2:1 | ||||
| 6. Round | 12/08/2018 | Swope Park Rangers | - | Portland Timbers 2 | 0:2 | ||||
| 6. Round | 19/08/2018 | Swope Park Rangers | - | Reno 1868 FC | 3:3 |
USA