| 5. Round | 08/07/2018 | OKC Energy FC | - | Colorado Springs Switchbacks | 1:1 | ||||
| 5. Round | 12/07/2018 | OKC Energy FC | - | Las Vegas Lights FC | 6:4 | ||||
| 5. Round | 22/07/2018 | Sacramento Republic | - | OKC Energy FC | 1:1 | ||||
| 5. Round | 26/07/2018 | OKC Energy FC | - | Fresno FC | 0:0 | ||||
| 5. Round | 29/07/2018 | OKC Energy FC | - | San Antonio FC | 1:2 | ||||
| 6. Round | 05/08/2018 | Colorado Springs Switchbacks | - | OKC Energy FC | 2:0 | ||||
| 7. Round | 09/09/2018 | Orange County SC | - | OKC Energy FC | 3:2 | ||||
| 8. Round | 14/10/2018 | Saint Louis FC | - | OKC Energy FC | 0:0 |
USA