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| 1st(1st leg) | OFK Petrovac | - | FK Arsenal | 2:1 | ||
| 2nd (2nd leg) | FK Arsenal | - | OFK Petrovac | 5:6 pso | ||
| 1st(1st leg): 01/06/2021 19:00 | 2nd (2nd leg): 06/06/2021 16:30 | Winner: OFK Petrovac | ||||
| 1st(1st leg) | FK Iskra Danilovgrad | - | OSK Igalo | 2:1 | ||
| 2nd (2nd leg) | OSK Igalo | - | FK Iskra Danilovgrad | 0:1 | ||
| 1st(1st leg): 01/06/2021 19:00 | 2nd (2nd leg): 06/06/2021 16:30 | Winner: FK Iskra Danilovgrad | ||||
