| 2. Round | 20/05/2021 | Los Angeles Galaxy II | - | Sporting Kansas City 2 | 1:1 | ||||
| 2. Round | 23/05/2021 | Indy Eleven | - | Sporting Kansas City 2 | 2:0 | ||||
| 3. Round | 03/06/2021 | Sporting Kansas City 2 | - | FC Tulsa | 4:1 | ||||
| 3. Round | 17/06/2021 | FC Tulsa | - | Sporting Kansas City 2 | 4:3 | ||||
| 3. Round | 20/06/2021 | Sporting Kansas City 2 | - | Indy Eleven | 1:2 | ||||
| 3. Round | 27/06/2021 | Memphis 901 | - | Sporting Kansas City 2 | 2:3 |
USA