Stadium: Center Court Round: 19 Ground: Clay
| ITF M15 Kursumlijska Banja | 2023/05/01 08:00 | Viktor Jovic v Alessandro Bellifemine | 6-4,6-3 |
| ITF M15 Kursumlijska Banja | 2023/04/27 10:35 | Viktor Jovic v Duje Ajdukovic | 7-5,0-6,4-6 |
| ITF M15 Kursumlijska Banja | 2023/04/26 16:00 | Viktor Jovic v Simone Agostini | 6-4,6-3 |
| UTR Pro Beograd | 2023/04/22 11:27 | Viktor Jovic v Luka Pavlovic | 2-6,6-2,4-5 |
| UTR Pro Beograd | 2023/04/21 06:00 | Viktor Jovic v Vanja Hodzic | 6-2,6-3 |
| UTR Pro Beograd | 2023/04/19 06:00 | Viktor Jovic v Petr Nesterov | 6-4,3-6,5-6 |
| UTR Pro Beograd | 2023/04/18 10:01 | Viktor Jovic v Christos Keisidis | 6-1,6-2 |
| UTR Pro Beograd | 2023/04/17 08:55 | Radomir Tomic v Viktor Jovic | 3-6,3-6 |
| ITF M15 Kursumlijska Banja | 2023/05/01 07:00 | Dmitrii Vasilev v Niklas Waldner | 6-3,1-6,7-10 |
| ITF M15 Kursumlijska Banja | 2023/04/24 07:00 | Aljaz Jeran v Niklas Waldner | 6-4,6-4 |
| ITF M25 Opatija | 2023/03/21 13:30 | Andrej Nedic v Niklas Waldner | 7-5,6-4 |
| ITF M25 Opatija | 2023/03/21 09:00 | Ivan Kremenchutskyi v Niklas Waldner | 6-4,3-6,8-10 |
| ITF M25 Opatija | 2023/03/19 10:30 | Sanisth Juneja v Niklas Waldner | 1-6,1-6 |
| ITF M15 Rovinj | 2023/03/12 12:00 | Dusan Obradovic v Niklas Waldner | 6-1,6-2 |
| ITF M15 Porec | 2023/03/06 12:50 | Niklas Waldner v Sasa Markovic | 6-7,6-7 |
| ITF M15 Porec | 2023/03/05 11:30 | Niklas Waldner v Riccardo Campagnola | 7-6,6-2 |