1. Round | 14/08/2021 | HNK Cibalia | - | NK Opatija | 2:2 | ||||
2. Round | 21/08/2021 | NK Opatija | - | NK Inter Zaprešić | 3:0 | ||||
5. Round | 15/09/2021 | Dinamo Zagreb II | - | NK Opatija | 2:1 | ||||
6. Round | 18/09/2021 | NK Opatija | - | NK Solin | 1:1 | ||||
9. Round | 16/10/2021 | NK Opatija | - | NK Varaždin | 2:2 | ||||
10. Round | 23/10/2021 | NK Rudeš | - | NK Opatija | 3:0 | ||||
14. Round | 27/11/2021 | NK Dubrava | - | NK Opatija | 1:0 |