4. Round | 10/06/2018 | Tulsa Roughnecks | - | Saint Louis FC | 0:3 | ||||
5. Round | 22/07/2018 | Colorado Springs Switchbacks | - | Tulsa Roughnecks | 4:2 | ||||
7. Round | 09/09/2018 | Portland Timbers 2 | - | Tulsa Roughnecks | 4:0 | ||||
8. Round | 11/10/2018 | Saint Louis FC | - | Tulsa Roughnecks | 1:0 | ||||
8. Round | 14/10/2018 | Tulsa Roughnecks | - | Seattle Sounders 2 | 1:4 |