Stadium: Court 3 Round: 54 Ground: Hardcourt indoor
| ITF M15 Sarajevo | 2021/06/02 10:50 | Bozo Barun v Matheus Pucinelli 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 |
| ITF M25 Kiseljak | 2021/05/26 09:00 | Stefan Micov v Bozo Barun | 4-6,1-6 |
| ITF M25 Kiseljak | 2021/05/25 08:00 | Bozo Barun v Goran Zivotic | 6-0,6-0 |
| ITF M25 Kiseljak | 2021/05/24 11:00 | Bozo Barun v Drazen Petrovic | 6-1,6-3 |
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Aleksandr Braynin v Simon Sedliak | 7-6,6-1 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Philipp Sikorski v Simon Sedliak | 1-6,6-7 |
| ITF M15 Monastir | 2021/04/19 11:00 | Filip Bergevi v Simon Sedliak | 6-1,6-2 |
| ITF M15 Monastir | 2021/04/18 10:00 | Simon Sedliak v Andrej Krajcik | 6-1,6-0 |
| ITF M15 Monastir | 2021/04/11 09:00 | Simon Sedliak v Jonas Maier | 2-6,4-6 |