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| 1st(1st leg) | Columbus Crew | - | Toronto FC | 0:0 (0:0) | ||
| 2nd (2nd leg) | Toronto FC | - | Columbus Crew | 1:0 (0:0) | ||
| 1st(1st leg): 22/11/2017 01:00 | 2nd (2nd leg): 30/11/2017 00:30 | Winner: Toronto FC | ||||
| 1st(1st leg) | Houston Dynamo | - | Seattle Sounders | 0:2 (0:2) | ||
| 2nd (2nd leg) | Seattle Sounders | - | Houston Dynamo | 3:0 (1:0) | ||
| 1st(1st leg): 22/11/2017 02:30 | 2nd (2nd leg): 01/12/2017 03:30 | Winner: Seattle Sounders | ||||
