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| 1st(1st leg) | Rangers | - | Universidad Católica | 0:1 (0:1) | ||
| 2nd (2nd leg) | Universidad Católica | - | Rangers | 3:1 (2:1) | ||
| 1st(1st leg): 09/07/2017 17:00 | 2nd (2nd leg): 10/08/2017 01:00 | Winner: Universidad Católica | ||||
| 1st(1st leg) | La Serena | - | Colo-Colo | 4:1 (1:0) | ||
| 2nd (2nd leg) | Colo-Colo | - | La Serena | 4:0 (1:0) | ||
| 1st(1st leg): 09/07/2017 20:30 | 2nd (2nd leg): 03/08/2017 01:00 | Winner: Colo-Colo | ||||
| 1st(1st leg) | Deportes Valdivia | - | Huachipato | 1:2 (1:2) | ||
| 2nd (2nd leg) | Huachipato | - | Deportes Valdivia | 4:0 (2:0) | ||
| 1st(1st leg): 09/07/2017 20:30 | 2nd (2nd leg): 22/07/2017 20:00 | Winner: Huachipato | ||||
| 1st(1st leg) | Barnechea | - | Audax Italiano | 1:2 (1:0) | ||
| 2nd (2nd leg) | Audax Italiano | - | Barnechea | 4:1 (2:0) | ||
| 1st(1st leg): 14/07/2017 23:00 | 2nd (2nd leg): 23/07/2017 01:00 | Winner: Audax Italiano | ||||
| 1st(1st leg) | Cobresal | - | Santiago Wanderers | 2:0 (1:0) | ||
| 2nd (2nd leg) | Santiago Wanderers | - | Cobresal | 3:0 (1:0) | ||
| 1st(1st leg): 15/07/2017 20:30 | 2nd (2nd leg): 22/07/2017 00:30 | Winner: Santiago Wanderers | ||||
| 1st(1st leg) | Puerto Montt | - | Deportes Temuco | 0:0 (0:0) | ||
| 2nd (2nd leg) | Deportes Temuco | - | Puerto Montt | 2:0 (1:0) | ||
| 1st(1st leg): 15/07/2017 23:00 | 2nd (2nd leg): 22/07/2017 20:00 | Winner: Deportes Temuco | ||||
| 1st(1st leg) | Unión La Calera | - | Palestino | 1:1 (1:0) | ||
| 2nd (2nd leg) | Palestino | - | Unión La Calera | 2:1 (1:1) | ||
| 1st(1st leg): 16/07/2017 01:45 | 2nd (2nd leg): 23/07/2017 20:30 | Winner: Palestino | ||||
| 1st(1st leg) | Coquimbo Unido | - | Everton | 3:2 (2:2) | ||
| 2nd (2nd leg) | Everton | - | Coquimbo Unido | 1:1 (1:1) | ||
| 1st(1st leg): 16/07/2017 17:00 | 2nd (2nd leg): 22/07/2017 17:00 | Winner: Coquimbo Unido | ||||
| 1st(1st leg) | Deportes Iberia | - | Universidad de Concepción | 2:0 (0:0) | ||
| 2nd (2nd leg) | Universidad de Concepción | - | Deportes Iberia | 0:2 (0:1) | ||
| 1st(1st leg): 16/07/2017 20:30 | 2nd (2nd leg): 22/07/2017 23:30 | Winner: Deportes Iberia | ||||
| 1st(1st leg) | Ñublense | - | Universidad de Chile | 0:2 (0:1) | ||
| 2nd (2nd leg) | Universidad de Chile | - | Ñublense | 2:0 (1:0) | ||
| 1st(1st leg): 16/07/2017 20:30 | 2nd (2nd leg): 22/07/2017 23:00 | Winner: Universidad de Chile | ||||
| 1st(1st leg) | Cobreloa | - | Antofagasta | 0:1 (0:0) | ||
| 2nd (2nd leg) | Antofagasta | - | Cobreloa | 1:1 (1:1) | ||
| 1st(1st leg): 16/07/2017 21:00 | 2nd (2nd leg): 23/07/2017 21:00 | Winner: Antofagasta | ||||
| 1st(1st leg) | Copiapó | - | San Luis | 2:1 (1:1) | ||
| 2nd (2nd leg) | San Luis | - | Copiapó | 2:0 (1:0) | ||
| 1st(1st leg): 16/07/2017 21:00 | 2nd (2nd leg): 22/07/2017 22:00 | Winner: San Luis | ||||
| 1st(1st leg) | San Marcos | - | Deportes Iquique | 2:0 (1:0) | ||
| 2nd (2nd leg) | Deportes Iquique | - | San Marcos | 1:0 (0:0) | ||
| 1st(1st leg): 16/07/2017 21:00 | 2nd (2nd leg): 23/07/2017 17:00 | Winner: San Marcos | ||||
| 1st(1st leg) | Unión San Felipe | - | Unión Española | 1:2 (1:2) | ||
| 2nd (2nd leg) | Unión Española | - | Unión San Felipe | 4:5 (0:0, 0:1, 0:1) pso | ||
| 1st(1st leg): 16/07/2017 23:00 | 2nd (2nd leg): 22/07/2017 20:00 | Winner: Unión San Felipe | ||||
| 1st(1st leg) | CD Magallanes | - | Curicó Unido | 1:1 (0:1) | ||
| 2nd (2nd leg) | Curicó Unido | - | CD Magallanes | 1:0 (0:0) | ||
| 1st(1st leg): 18/07/2017 20:00 | 2nd (2nd leg): 22/07/2017 23:00 | Winner: Curicó Unido | ||||
| 1st(1st leg) | O'Higgins | - | Santiago Morning | 1:3 (0:1) | ||
| 2nd (2nd leg) | Santiago Morning | - | O'Higgins | 0:3 (0:3) | ||
| 1st(1st leg): 22/07/2017 21:00 | 2nd (2nd leg): 02/08/2017 20:30 | Winner: O'Higgins | ||||
