1. Round | 14/08/2020 | NK Opatija | - | Hajduk Split II | 2:1 | ||||
2. Round | 22/08/2020 | NK Sesvete | - | NK Opatija | 0:1 | ||||
4. Round | 12/09/2020 | NK Rudeš | - | NK Opatija | 1:2 | ||||
5. Round | 15/09/2020 | NK Opatija | - | HNK Cibalia | 0:1 | ||||
6. Round | 19/09/2020 | NK Dubrava | - | NK Opatija | 1:4 | ||||
12. Round | 30/10/2020 | NK Međimurje | - | NK Opatija | 3:0 | ||||
13. Round | 25/11/2020 | NK Opatija | - | NK Inter Zaprešić | 3:2 | ||||
19. Round | 20/02/2021 | NK Opatija | - | NK Sesvete | 1:0 | ||||
22. Round | 14/03/2021 | HNK Cibalia | - | NK Opatija | 2:0 | ||||
26. Round | 17/04/2021 | NK Osijek II | - | NK Opatija | 1:0 | ||||
27. Round | 21/04/2021 | NK Opatija | - | NK Junak Sinj | 1:0 | ||||
28. Round | 24/04/2021 | NK Dugopolje | - | NK Opatija | 0:0 | ||||
25. Round | 28/04/2021 | NK Opatija | - | Hrvatski Dragovoljac | 0:0 | ||||
29. Round | 01/05/2021 | NK Opatija | - | NK Međimurje | 1:1 | ||||
30. Round | 07/05/2021 | NK Inter Zaprešić | - | NK Opatija | 3:0 | ||||
34. Round | 29/05/2021 | NK Opatija | - | NK BSK Bijelo Brdo | 2:2 |