Stadium: Court 6 Round: 44 Ground: Clay
| ITF M25 Velenje | 2021/07/05 09:00 | Frane Nincevic v Nicolas Bruna | 5-7,7-6,11-9 |
| UTR Pro Tennis Series - Zadar | 2021/07/03 07:00 | Vito Tonejc v Frane Nincevic | 6-4,5-2 |
| UTR Pro Tennis Series - Zadar | 2021/07/02 12:30 | Josip Krstanovic v Frane Nincevic | 6-4,1-6,7-5 |
| UTR Pro Tennis Series - Zadar | 2021/07/01 09:30 | Constant De La Bassetiere v Frane Nincevic | 3-6,2-6 |
| UTR Pro Tennis Series - Zadar | 2021/06/29 11:00 | Warren Sinius v Frane Nincevic | 5-7,3-6 |
| UTR Pro Tennis Series - Zadar | 2021/06/28 12:30 | Frane Nincevic v Jerko Brkic | 6-1,7-5 |
| ITF M15 - Sarajevo | 2021/06/02 09:00 | Frane Nincevic v Mathieu Perchicot | 6-2,2-6,4-6 |
| ITF M15 - Šibenik | 2021/05/17 08:00 | Nikola Basic v Frane Nincevic | 6-7,6-1,10-8 |
| 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 - Belgrado | 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 |
| Eastern European Championship | 2020/06/25 16:00 | Filip Krajinovic v Nemanja Malesevic | 6-0,6-3 |