Stadium: Court 4 Round: 25 Ground: Clay
| ITF M15 Sarajevo | 2021/06/02 09:00 | Duje Kekez v Sebastian Prechtel | 6-1,6-1 |
| ITF M25 Kiseljak | 2021/05/27 12:00 | Zsombor Piros v Sebastian Prechtel | 6-3,6-4 |
| ITF M25 Kiseljak | 2021/05/25 13:05 | Sebastian Prechtel v Duje Kekez | 3-6,6-3,6-4 |
| ITF M15 Sibenik | 2021/05/20 08:00 | Zsombor Piros v Sebastian Prechtel | 6-1,6-1 |
| ITF M15 Sibenik | 2021/05/19 10:15 | Sebastian Prechtel v Sean Cuenin | 6-3,7-5 |
| ITF M15 Sibenik | 2021/05/18 08:00 | Sebastian Prechtel v Nikola Basic | 6-2,6-1 |
| ITF M15 Sibenik | 2021/05/17 09:20 | Sebastian Prechtel v Adan Freire Da Silva | 6-2,6-2 |
| ITF M15 Sibenik | 2021/05/16 07:30 | Sebastian Prechtel v Alexander Mannapov | 7-5,6-1 |
| ITF M25 Velenje | 2021/07/06 08:00 | Frane Nincevic v Nemanja Malesevic | 4-6,6-1,5-10 |
| ITF M25 Velenje | 2021/07/05 10:00 | Nemanja Malesevic v Maks Lukman | 2-6,6-4,11-9 |
| ITF M25 Velenje | 2021/07/04 07:30 | Nemanja Malesevic v Mikhail Minakov | 7-5,6-7,10-8 |
| ITF M25 Belgrade | 2021/06/27 12:00 | Nemanja Malesevic v Matvey Minin | 6-4,6-7,10-12 |
| ITF M15 Sarajevo | 2021/06/02 12:20 | Joao Lucas Reis da Silva v Nemanja Malesevic | 6-3,6-4 |
| ITF M15 Sarajevo | 2021/06/01 10:30 | Ali Habib v Nemanja Malesevic | 4-6,2-6 |
| ITF M15 Sarajevo | 2021/05/31 12:00 | Luka Puljic v Nemanja Malesevic | 1-6,2-6 |
| ITF M15 Sarajevo | 2021/05/30 12:00 | Samuel M Arjona v Nemanja Malesevic | 3-6,3-6 |