| 1. Round | 17/03/2018 | Reno 1868 FC | - | Swope Park Rangers | 3:4 | ||||
| 2. Round | 05/04/2018 | Swope Park Rangers | - | Colorado Springs Switchbacks | 1:0 | ||||
| 2. Round | 22/04/2018 | Phoenix Rising | - | Swope Park Rangers | 2:2 | ||||
| 3. Round | 10/05/2018 | Real Monarchs SLC | - | Swope Park Rangers | 4:1 | ||||
| 3. Round | 26/05/2018 | Swope Park Rangers | - | Phoenix Rising | 1:0 |  |
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| 4. Round | 03/06/2018 | Saint Louis FC | - | Swope Park Rangers | 2:0 | ||||
| 5. Round | 15/07/2018 | Portland Timbers 2 | - | Swope Park Rangers | 2:1 | ||||
| 6. Round | 02/08/2018 | Los Angeles Galaxy II | - | Swope Park Rangers | 1:1 | ||||
| 7. Round | 02/09/2018 | Swope Park Rangers | - | OKC Energy FC | 1:0 | |
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| 7. Round | 09/09/2018 | Swope Park Rangers | - | Fresno FC | 1:0 | ||||
| 7. Round | 23/09/2018 | Tulsa Roughnecks | - | Swope Park Rangers | 1:1 | ||||
| 8. Round | 04/10/2018 | Sacramento Republic | - | Swope Park Rangers | 3:1 |
USA
Mexico