| 1. Round | 01/04/2018 | Las Vegas Lights FC | - | Swope Park Rangers | 2:1 | ||||
| 2. Round | 08/04/2018 | San Antonio FC | - | Swope Park Rangers | 1:1 | ||||
| 3. Round | 20/05/2018 | Rio Grande Valley FC | - | Swope Park Rangers | 0:0 | ||||
| 4. Round | 10/06/2018 | Colorado Springs Switchbacks | - | Swope Park Rangers | 0:1 | ||||
| 4. Round | 14/06/2018 | Swope Park Rangers | - | Real Monarchs SLC | 3:2 | ||||
| 5. Round | 06/07/2018 | Seattle Sounders 2 | - | Swope Park Rangers | 0:2 |  |
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| 5. Round | 11/07/2018 | Swope Park Rangers | - | Sacramento Republic | 1:3 | ||||
| 6. Round | 19/08/2018 | Swope Park Rangers | - | Reno 1868 FC | 3:3 | ||||
| 6. Round | 26/08/2018 | San Antonio FC | - | Swope Park Rangers | 1:2 | ||||
| 6. Round | 30/08/2018 | Swope Park Rangers | - | Tulsa Roughnecks | 2:1 | ||||
| 7. Round | 15/09/2018 | Swope Park Rangers | - | Saint Louis FC | 3:4 | ||||
| 7. Round | 20/09/2018 | Swope Park Rangers | - | San Antonio FC | 2:0 | ||||
| 8. Round | 14/10/2018 | Swope Park Rangers | - | Los Angeles Galaxy II | 5:1 |
USA