| 2. Round | 08/04/2018 | Orange County SC | - | Los Angeles Galaxy II | 3:0 |  |
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| 2. Round | 26/04/2018 | Rio Grande Valley FC | - | Orange County SC | 2:0 | ||||
| 2. Round | 29/04/2018 | Orange County SC | - | Colorado Springs Switchbacks | 1:0 | ||||
| 3. Round | 05/05/2018 | Real Monarchs SLC | - | Orange County SC | 2:1 | ||||
| 3. Round | 13/05/2018 | Orange County SC | - | Saint Louis FC | 1:1 | ||||
| 4. Round | 03/06/2018 | Sacramento Republic | - | Orange County SC | 1:0 | ||||
| 4. Round | 11/06/2018 | Los Angeles Galaxy II | - | Orange County SC | 0:1 | ||||
| 4. Round | 17/06/2018 | Orange County SC | - | Reno 1868 FC | 2:2 |
Nigeria