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| 1st(1st leg) | D.C. United | - | New York RB | 0:1 (0:0) | ||
| 2nd (2nd leg) | New York RB | - | D.C. United | 1:0 (0:0) | ||
| 1st(1st leg): 01/11/2015 20:00 | 2nd (2nd leg): 08/11/2015 20:00 | Winner: New York RB | ||||
| 1st(1st leg) | Portland Timbers | - | Vancouver Whitecaps | 0:0 (0:0) | ||
| 2nd (2nd leg) | Vancouver Whitecaps | - | Portland Timbers | 0:2 (0:1) | ||
| 1st(1st leg): 01/11/2015 22:00 | 2nd (2nd leg): 09/11/2015 03:00 | Winner: Portland Timbers | ||||
| 1st(1st leg) | Impact de Montréal | - | Columbus Crew | 2:1 (1:1) | ||
| 2nd (2nd leg) | Columbus Crew | - | Impact de Montréal | 3:1 (1:1, 2:1) aet | ||
| 1st(1st leg): 02/11/2015 00:00 | 2nd (2nd leg): 08/11/2015 22:00 | Winner: Columbus Crew | ||||
| 1st(1st leg) | Seattle Sounders | - | FC Dallas | 2:1 (0:1) | ||
| 2nd (2nd leg) | FC Dallas | - | Seattle Sounders | 4:2 (0:0, 2:1, 2:1) pso | ||
| 1st(1st leg): 02/11/2015 02:30 | 2nd (2nd leg): 09/11/2015 00:30 | Winner: FC Dallas | ||||
