Stadium: Court 2 Indoor Round: 44 Ground: Clay
| ITF M15 Kramsach | 2019/07/15 08:00 | Stevan Popovic v Domagoj Biljesko | 2-6,0-6 |
| ITF M25 Kiseljak | 2021/05/26 10:00 | Domagoj Biljesko v Tim Heger | 6-7,6-2,3-6 |
| ITF M15 Brcko | 2021/05/21 11:20 | Artem Dubrivnyy v Domagoj Biljesko | 6-4,7-6 |
| ITF M15 Brcko | 2021/05/18 14:00 | Domagoj Biljesko v Maikel De Boes | 6-3,7-5 |
| ITF M15 Sibenik | 2021/04/20 08:00 | Domagoj Biljesko v Christian Sigsgaard | 6-1,6-7,4-10 |
| ITF M15 Sibenik | 2021/04/19 09:15 | Domagoj Biljesko v Luka Mikrut | 6-4,7-5 |
| ITF M15 Sibenik | 2021/04/18 10:00 | Domagoj Biljesko v Peter Samosi | 6-2,6-2 |
| ITF M15 Opatija | 2021/03/23 09:00 | Matic Spec v Domagoj Biljesko | 7-5,6-2 |
| ITF M15 Opatija | 2021/03/22 11:45 | Tadija Radovanovic v Domagoj Biljesko | 6-7,1-6 |
| ITF M15 Szarajevó | 2021/05/31 08:00 | Tadija Radovanovic v Stevan Popovic | 6-3,5-7,9-11 |
| ITF M25 Kiseljak | 2021/05/25 08:00 | Stefan Micov v Stevan Popovic | 5-7,7-5,10-6 |
| ITF M25 Kiseljak | 2021/05/24 09:30 | Alexandar Balj v Stevan Popovic | 3-6,5-7 |
| ITF M25 Kiseljak | 2021/05/23 09:30 | Stevan Popovic v Anze Arh | 6-4,4-6,10-4 |
| ITF M15 Brcko | 2021/05/16 11:00 | Lazar Vojinovic v Stevan Popovic | 7-5,6-4 |
| ITF M15 Prijedor | 2021/05/09 09:30 | Alen Rogic-Hadzalic v Stevan Popovic | 6-2,6-3 |
| ITF M15 Cairo | 2021/01/11 09:00 | Andrey Chepelev v Stevan Popovic | 6-0,6-1 |
| ITF M15 Cairo | 2021/01/04 09:00 | Piotr Grynkowski v Stevan Popovic | 6-1,6-0 |