Stadium: Court 4 Round: 26 Ground: Clay
| ITF M25 Kiseljak | 2021/05/26 10:00 | Domagoj Biljesko v Tim Heger | 6-7,6-2,3-6 |
| ITF M25 Kiseljak | 2021/05/25 08:00 | Tim Heger v Marino Jakic | 6-3,6-7,10-1 |
| ITF M25 Kiseljak | 2021/05/24 08:00 | Tim Heger v Luka Puljic | 6-4,6-3 |
| ITF M25 Kiseljak | 2021/05/23 08:15 | Tim Heger v Joris Hoogland | 7-6,6-4 |
| ITF M15 Brcko | 2021/05/18 14:40 | Artem Dubrivnyy v Tim Heger | 6-3,6-1 |
| ITF M15 Prijedor | 2021/05/12 10:30 | Joao Lucas Reis da Silva v Tim Heger | 6-3,7-5 |
| ITF M15 Prijedor | 2021/05/11 09:30 | Alen Rogic-Hadzalic v Tim Heger | 6-3,4-6,7-10 |
| ITF M15 Prijedor | 2021/05/10 13:30 | Nicolas Zanellato v Tim Heger | 6-4,3-6,7-10 |
| ITF M25 Kiseljak | 2021/05/26 12:30 | Matheus P De Almeida v Elmar Ejupovic | 6-2,6-2 |
| ITF M15 Brcko | 2021/05/22 12:15 | Eric Vanshelboim v Matheus P De Almeida | 7-6,6-4 |
| ITF M15 Brcko | 2021/05/22 07:30 | Matheus P De Almeida v Viktor Jovic | 6-1,6-0 |
| ITF M15 Brcko | 2021/05/21 15:20 | Matheus P De Almeida v Nicolas Zanellato | 6-4,7-6 |
| ITF M15 Brcko | 2021/05/21 09:25 | Matheus P De Almeida v Lazar Milicevic | 7-5,7-5 |
| ITF M15 Prijedor | 2021/05/14 13:45 | Matheus P De Almeida v Nerman Fatic | 6-2,4-6,4-6 |
| ITF M15 Prijedor | 2021/05/14 10:15 | Matheus P De Almeida v Bozo Barun | 6-1,6-1 |
| ITF M15 Prijedor | 2021/05/12 11:00 | Marko Tepavac v Matheus P De Almeida | 4-6,5-7 |