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| 1st(1st leg) | Bolívar | - | The Strongest | 0:1 (0:0) | ||
| 2nd (2nd leg) | The Strongest | - | Bolívar | 1:1 (0:0) | ||
| 1st(1st leg): 20/05/2018 21:00 | 2nd (2nd leg): 27/05/2018 22:15 | Winner: The Strongest | ||||
| 1st(1st leg) | San José | - | Jorge Wilstermann | 2:4 (1:3) | ||
| 2nd (2nd leg) | Jorge Wilstermann | - | San José | 1:0 (0:0) | ||
| 1st(1st leg): 20/05/2018 22:15 | 2nd (2nd leg): 27/05/2018 20:00 | Winner: Jorge Wilstermann | ||||
