| 1. Round | 05/03/2018 | Sporting Kansas City | - | New York City FC | 0:2 | ||||
| 2. Round | 15/04/2018 | Sporting Kansas City | - | Seattle Sounders | 2:2 | ||||
| 2. Round | 21/04/2018 | Sporting Kansas City | - | Vancouver Whitecaps | 6:0 |  |
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| 3. Round | 06/05/2018 | Sporting Kansas City | - | Colorado Rapids | 1:0 | ||||
| 3. Round | 10/05/2018 | Atlanta United FC | - | Sporting Kansas City | 0:2 | ||||
| 3. Round | 27/05/2018 | Sporting Kansas City | - | Columbus Crew | 0:0 | ||||
| 4. Round | 04/06/2018 | Sporting Kansas City | - | Minnesota United FC | 4:1 | |
Spain