20. Round | 27/02/2021 | NK Solin | - | NK Opatija | 1:1 | ||||
22. Round | 14/03/2021 | HNK Cibalia | - | NK Opatija | 2:0 | ||||
24. Round | 02/04/2021 | HNK Orijent Rijeka | - | NK Opatija | 4:1 | ||||
29. Round | 01/05/2021 | NK Opatija | - | NK Međimurje | 1:1 | ||||
30. Round | 07/05/2021 | NK Inter Zaprešić | - | NK Opatija | 3:0 | ||||
32. Round | 16/05/2021 | NK Croatia Zmijavci | - | NK Opatija | 1:3 |