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| H (Match allé) | Botev Plovdiv | - | Slavia Sofia | 2:1 (2:1) | ||
| R (match retour) | Slavia Sofia | - | Botev Plovdiv | 1:0 (0:0) | ||
| H (Match allé): 10.04.2018 18:00 | R (match retour): 24.04.2018 17:30 | vainqueur: Slavia Sofia | ||||
| H (Match allé) | CSKA Sofia | - | Levski Sofia | 0:2 (0:1) | ||
| R (match retour) | Levski Sofia | - | CSKA Sofia | 2:2 (1:0) | ||
| H (Match allé): 11.04.2018 17:00 | R (match retour): 25.04.2018 17:30 | vainqueur: Levski Sofia | ||||
