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| 1st(1st leg) | Audaz | - | Santa Tecla FC | 1:2 (0:1) | ||
| 2nd (2nd leg) | Santa Tecla FC | - | Audaz | 4:0 | ||
| 1st(1st leg): 10/05/2018 22:30 | 2nd (2nd leg): 13/05/2018 21:00 | Winner: Santa Tecla FC | ||||
| 1st(1st leg) | CD Águila | - | Alianza | 2:3 (0:0) | ||
| 2nd (2nd leg) | Alianza | - | CD Águila | 2:0 | ||
| 1st(1st leg): 10/05/2018 22:30 | 2nd (2nd leg): 13/05/2018 21:00 | Winner: Alianza | ||||
