| 1. Round | 25/03/2018 | Tulsa Roughnecks | - | Real Monarchs SLC | 2:3 | ||||
| 2. Round | 12/04/2018 | Seattle Sounders 2 | - | Real Monarchs SLC | 1:3 | ||||
| 2. Round | 22/04/2018 | Tampa Bay Rowdies | - | Real Monarchs SLC | 2:0 | ||||
| 2. Round | 01/05/2018 | Real Monarchs SLC | - | Las Vegas Lights FC | 0:0 | ||||
| 3. Round | 20/05/2018 | Las Vegas Lights FC | - | Real Monarchs SLC | 0:2 | ||||
| 3. Round | 30/05/2018 | Real Monarchs SLC | - | Sacramento Republic | 1:0 | ||||
| 7. Round | 20/09/2018 | Orange County SC | - | Real Monarchs SLC | 5:2 | ||||
| 7. Round | 23/09/2018 | Los Angeles Galaxy II | - | Real Monarchs SLC | 6:1 |
USA