| 1. Round | 18/03/2018 | OKC Energy FC | - | Tulsa Roughnecks | 1:0 | ||||
| 1. Round | 25/03/2018 | Phoenix Rising | - | OKC Energy FC | 4:1 | ||||
| 1. Round | 29/03/2018 | OKC Energy FC | - | Orange County SC | 0:1 | ||||
| 3. Round | 20/05/2018 | OKC Energy FC | - | Colorado Springs Switchbacks | 1:0 | ||||
| 5. Round | 08/07/2018 | OKC Energy FC | - | Colorado Springs Switchbacks | 1:1 |
USA