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| 1st(1st leg) | Santiago Wanderers | - | Huachipato | 1:1 (1:0) | ||
| 2nd (2nd leg) | Huachipato | - | Santiago Wanderers | 3:5 (0:0, 0:0) pso | ||
| 1st(1st leg): 18/10/2017 22:00 | 2nd (2nd leg): 25/10/2017 22:00 | Winner: Santiago Wanderers | ||||
| 1st(1st leg) | Universidad de Chile | - | Antofagasta | 2:0 (2:0) | ||
| 2nd (2nd leg) | Antofagasta | - | Universidad de Chile | 1:0 (0:0) | ||
| 1st(1st leg): 19/10/2017 01:00 | 2nd (2nd leg): 26/10/2017 01:00 | Winner: Universidad de Chile | ||||
