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| 1st(1st leg) | Árabe Unido | - | Santos de Guápiles | 0:0 (0:0) | ||
| 2nd (2nd leg) | Santos de Guápiles | - | Árabe Unido | 1:0 (0:0) | ||
| 1st(1st leg): 14/09/2017 03:00 | 2nd (2nd leg): 22/09/2017 03:00 | Winner: Santos de Guápiles | ||||
| 1st(1st leg) | Plaza Amador | - | Olimpia | 1:7 (1:3) | ||
| 2nd (2nd leg) | Olimpia | - | Plaza Amador | 1:1 (0:1) | ||
| 1st(1st leg): 15/09/2017 03:00 | 2nd (2nd leg): 22/09/2017 01:00 | Winner: Olimpia | ||||
