Stadium: Court 2 Round: 44 Ground: Clay
| ITF M25 Belgrade | 2021/07/01 09:20 | Rrezart Cungu v Nick Hardt | 0-6,6-1,2-6 |
| ITF M25 Belgrade | 2021/06/30 10:05 | Dusan Milanovic v Rrezart Cungu | 2-6,5-7 |
| ITF M25 Belgrade | 2021/06/29 09:15 | Rrezart Cungu v Viktor Jovic | 6-1,6-1 |
| ITF M25 Belgrade | 2021/06/28 10:00 | Stefan Palosi v Rrezart Cungu | 7-6,4-6,8-10 |
| ITF M25 Belgrade | 2021/06/27 13:00 | Rrezart Cungu v Andreja Petrovic | 6-4,6-3 |
| Davis Cup | 2021/06/26 09:00 | Rrezart Cungu v Michael Avetisyan | 6-1,6-0 |
| Davis Cup | 2021/06/24 09:30 | Rrezart Cungu v Tamerlan Azizov | 6-1,6-1 |
| Davis Cup | 2021/06/22 09:20 | Rrezart Cungu v Daniel Ostap | 6-1,6-2 |
| ITF M15 Sofia | 2021/07/04 10:30 | Radu F Macovei v Lazar Vojinovic | 4-6,7-6,10-4 |
| ITF M15 Sarajevo | 2021/05/30 09:00 | Valentin Lapalu v Lazar Vojinovic | 6-4,7-5 |
| ITF M15 Brcko | 2021/05/19 08:30 | Maximilian Neuchrist v Lazar Vojinovic | 6-3,6-4 |
| ITF M15 Brcko | 2021/05/18 09:30 | Drazen Petrovic v Lazar Vojinovic | 2-6,3-6 |
| ITF M15 Brcko | 2021/05/17 15:30 | Lazar Vojinovic v Luka Petrovic | 6-3,6-4 |
| ITF M15 Brcko | 2021/05/16 11:00 | Lazar Vojinovic v Stevan Popovic | 7-5,6-4 |
| ITF M15 Prijedor | 2021/05/10 10:30 | Lazar Vojinovic v Tomislav Jotovski | 5-7,0-6 |
| ITF M15 Prijedor | 2021/05/09 09:30 | Drazen Petrovic v Lazar Vojinovic | 3-6,6-0,4-10 |