1. Round | 29/07/2018 | NK Istra 1961 | - | Slaven Belupo | 1:1 | ||||
2. Round | 03/08/2018 | Dinamo Zagreb | - | NK Istra 1961 | 3:0 | ||||
3. Round | 12/08/2018 | NK Osijek | - | NK Istra 1961 | 3:0 | ||||
4. Round | 18/08/2018 | NK Istra 1961 | - | Lokomotiva Zagreb | 1:2 | ||||
5. Round | 26/08/2018 | HNK Rijeka | - | NK Istra 1961 | 3:3 | ||||
11. Round | 20/10/2018 | NK Istra 1961 | - | Dinamo Zagreb | 1:4 | ||||
12. Round | 27/10/2018 | NK Istra 1961 | - | NK Osijek | 1:1 | ||||
14. Round | 11/11/2018 | NK Istra 1961 | - | HNK Rijeka | 1:2 |