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| H (Match allé) | Isidro Metapán | - | Santa Tecla FC | 1:0 (1:0) | ||
| R (match retour) | Santa Tecla FC | - | Isidro Metapán | 2:1 (1:0) | ||
| H (Match allé): 07.12.2017 02:00 | R (match retour): 11.12.2017 02:00 | vainqueur: Isidro Metapán | ||||
| H (Match allé) | FAS | - | Alianza | 1:1 (0:1) | ||
| R (match retour) | Alianza | - | FAS | 1:1 (0:1) | ||
| H (Match allé): 08.12.2017 02:30 | R (match retour): 10.12.2017 22:00 | |||||
