Stadium: Court 2 Round: 44 Ground: Clay
| ITF M15 Prijedor | 2021/05/09 07:00 | Elgin Khoeblal v Luca Teboul | 6-2,6-0 |
| ITF M15 Sharm El Sheikh | 2021/02/14 14:30 | Elgin Khoeblal v Keisuke Saitoh | 0-6,2-6 |
| ITF M15 Prijedor | 2021/05/09 07:00 | Lilian Breut v Bozo Barun | 6-2,2-6,8-10 |
| ITF M15 Sibenik | 2021/04/21 12:40 | Alen Rogic-Hadzalic v Bozo Barun | 7-6,7-5 |
| 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 |