Stadium: Court 5 Round: 44 Ground: Clay
| ITF M25 Velenje | 2021/07/05 09:00 | Domagoj Biljesko v Tadija Radovanovic | 6-4,4-6,11-9 |
| ITF M15 Sarajevo | 2021/06/03 10:30 | Domagoj Biljesko v Hernan Casanova | 2-6,3-6 |
| ITF M15 Sarajevo | 2021/06/02 15:55 | Zsombor Velcz v Domagoj Biljesko | 7-6,2-6,5-7 |
| ITF M15 Sarajevo | 2021/06/01 09:00 | Domagoj Biljesko v Michele Vianello | 6-3,6-4 |
| ITF M15 Sarajevo | 2021/05/31 12:00 | Domagoj Biljesko v Stevan Popovic | 6-1,6-2 |
| 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 M25 Velenje | 2021/07/05 09:50 | Lun Obrul v Nicolas Parizzia | 3-6,3-6 |
| ITF M25 Velenje | 2021/07/04 07:30 | Matic Dimic v Nicolas Parizzia | 3-6,4-6 |
| ITF M25 Klosters | 2021/06/21 09:05 | Edoardo Graziani v Nicolas Parizzia | 6-4,7-6 |
| ITF M25 Klosters | 2021/06/20 10:40 | Nicolas Affolter v Nicolas Parizzia | 6-7,6-2,9-11 |
| ITF M15 Antalya | 2021/06/03 07:30 | Nicolas Parizzia v Jakub Paul | 4-6,0-6 |
| ITF M15 Antalya | 2021/06/02 07:30 | Marsel Ilhan v Nicolas Parizzia | 3-6,6-7 |
| ITF M15 Antalya | 2021/06/01 07:00 | Daisuke Sumizawa v Nicolas Parizzia | 4-6,6-1,6-10 |
| ITF M15 Antalya | 2021/05/31 08:30 | Nicolas Parizzia v Guillaume Dermiens | 6-3,1-6,10-5 |