| UTR Pro Tennis Series Zadar | 2021/07/01 12:30 | Deni Zmak v Vito Tonejc | 6-3,5-2 |
| UTR Pro Tennis Series Zadar | 2021/06/30 11:00 | Arthus De La Bassetiere v Deni Zmak | 2-6,3-5 |
| UTR Pro Tennis Series Zadar | 2021/06/29 08:00 | Ihor Dudun v Deni Zmak | 3-6,2-6 |
| ITF M15 Rovinj | 2021/03/16 08:55 | Matteo Arnaldi v Deni Zmak | 6-3,6-4 |
| 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 | Deni Zmak v Alessandro Ragazzi | 6-3,7-6 |
| Adriatic Tennis Series | 2020/06/16 10:00 | Danilo Petrovic v Deni Zmak | 6-2,6-4 |
| Adriatic Tennis Series | 2020/06/15 09:30 | Marino Jakic v Deni Zmak | 2-6,4-5 |
| UTR Pro Tennis Series Zadar | 2021/07/01 14:00 | Arthus De La Bassetiere v Bozo Barun | 7-6,6-2 |
| UTR Pro Tennis Series Zadar | 2021/06/30 12:00 | Ihor Dudun v Bozo Barun | 1-6,1-5 |
| UTR ProTennis Series Zadar | 2021/06/28 09:30 | Vito Tonejc v Bozo Barun | 6-3,3-6,5-3 |
| ITF M15 Sarajevo | 2021/06/02 10:50 | Bozo Barun v Matheus P De Almeida | 3-6,2-6 |
| ITF M15 Sarajevo | 2021/06/01 10:30 | Bozo Barun v Matej Galik | 6-3,4-6,10-7 |
| ITF M15 Sarajevo | 2021/05/31 12:00 | Bozo Barun v Nicolas Zanellato | 6-3,6-1 |
| ITF M15 Sarajevo | 2021/05/31 08:00 | Bozo Barun v Ivan Randjelovic | 6-0,6-2 |
| ITF M25 Kiseljak | 2021/05/27 09:00 | Bozo Barun v Aldin Setkic | 2-6,4-6 |