Stadium: Court 5 Round: 25 Ground: Clay
| ITF M15 Sibenik | 2021/04/20 08:00 | Alen Rogic-Hadzalic v Ondrej Horak | 6-1,6-4 |
| ITF M15 Sibenik | 2021/04/19 10:55 | Alen Rogic-Hadzalic v Jan Kupcic | 7-5,6-3 |
| ITF M15 Sibenik | 2021/04/18 13:00 | Alen Rogic-Hadzalic v Milan Radojkovic | 6-4,7-5 |
| ITF M15 Opatija | 2021/03/21 13:00 | Samo Polakovic v Alen Rogic-Hadzalic | 6-3,2-6,13-11 |
| ITF M15 Rovinj | 2021/03/15 11:30 | Deni Zmak v Alen Rogic-Hadzalic | 6-3,7-6 |
| ITF M15 Rovinj | 2021/03/14 08:30 | Alen Rogic-Hadzalic v Aleksandre Bakshi | 6-4,6-2 |
| ITF M15 Porec | 2021/03/07 14:30 | Zvonimir Oreskovic v Alen Rogic-Hadzalic | 3-6,2-6 |
| Adriatic Tennis Series | 2020/06/15 15:30 | Alen Rogic-Hadzalic v Nikola Mektic | 6-7,1-6 |
| Challenger Split | 2021/04/12 08:30 | Bozo Barun v Lukas Klein | 1-6,4-6 |
| Challenger Split Qual | 2021/04/11 11:30 | Gian Marco Moroni v Bozo Barun | 3-6,6-2,6-7 |
| Challenger Split | 2021/04/04 09:00 | Blaz Kavcic v Bozo Barun | 6-4,6-3 |
| ITF M15 Opatija | 2021/03/23 10:50 | Francesco Passaro v Bozo Barun | 6-2,6-3 |
| ITF M15 Opatija | 2021/03/22 13:30 | Bozo Barun v Samo Polakovic | 6-4,6-2 |
| ITF M15 Opatija | 2021/03/21 11:00 | Matthias Uwe Kask v Bozo Barun | 2-6,4-6 |
| ITF M15 Porec | 2021/03/08 10:00 | Louis Tessa v Bozo Barun | 4-6,6-4,10-7 |
| ITF M15 Porec | 2021/03/07 11:00 | Bozo Barun v Giulio Colacioppo | 6-1,6-0 |