3. Round | 10/05/2018 | Fresno FC | - | Rio Grande Valley FC | 2:2 | ||||
3. Round | 24/05/2018 | Rio Grande Valley FC | - | Los Angeles Galaxy II | 1:1 | ||||
4. Round | 05/06/2018 | Real Monarchs SLC | - | Rio Grande Valley FC | 2:0 | ||||
6. Round | 23/08/2018 | Los Angeles Galaxy II | - | Rio Grande Valley FC | 1:1 | ||||
7. Round | 09/09/2018 | Rio Grande Valley FC | - | Real Monarchs SLC | 2:1 | ||||
7. Round | 16/09/2018 | Colorado Springs Switchbacks | - | Rio Grande Valley FC | 1:1 | ||||
7. Round | 27/09/2018 | Reno 1868 FC | - | Rio Grande Valley FC | 4:0 | ||||
8. Round | 07/10/2018 | Tulsa Roughnecks | - | Rio Grande Valley FC | 1:2 |