| 2. Round | 02/05/2021 | FC Tulsa | - | Sporting Kansas City 2 | 2:0 | ||||
| 2. Round | 20/05/2021 | Los Angeles Galaxy II | - | Sporting Kansas City 2 | 1:1 |  |
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| 2. Round | 23/05/2021 | Indy Eleven | - | Sporting Kansas City 2 | 2:0 |  |
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| 3. Round | 10/06/2021 | Atlanta United II | - | Sporting Kansas City 2 | 2:2 | ||||
| 3. Round | 17/06/2021 | FC Tulsa | - | Sporting Kansas City 2 | 4:3 | ||||
| 3. Round | 24/06/2021 | OKC Energy FC | - | Sporting Kansas City 2 | 1:0 | ||||
| 3. Round | 27/06/2021 | Memphis 901 | - | Sporting Kansas City 2 | 2:3 | ||||
| 4. Round | 03/07/2021 | Sporting Kansas City 2 | - | Louisville City FC | 2:4 |
Croatia