Stadion: Court 2 Round: 44 Ground: Clay
| ITF - M15 - Kuršumlijska Banja | 2023/08/27 12:00 | Nikola Mitrovic v Shendrit Deari | 0-6,5-7 |
| ITF - M25 - Osijek | 2023/08/07 07:30 | Gal Emersic Potocnik v Nikola Mitrovic | 6-2,6-0 |
| ITF - M15 - Novi Sad | 2023/07/31 16:05 | Lorenzo Gagliardo v Nikola Mitrovic | 6-1,6-2 |
| ITF - M15 - Novi Sad | 2023/07/31 07:00 | Nikola Mitrovic v Dennis Dragomirov | 6-4,4-6,11-9 |
| ITF - M15 - Novi Sad | 2023/07/23 07:00 | Nikola Mitrovic v Davud Amirov | 3-6,6-4,9-11 |
| ITF - M15 - Belgrad | 2023/06/25 15:40 | Nikola Mitrovic v Vlad Cristian Breazu | 2-6,2-6 |
| ITF - M25 - Kuršumlijska Banja | 2023/06/04 13:00 | Nikola Mitrovic v Jan Kobierski | 6-4,1-6,8-10 |
| ITF - M15 - Kuršumlijska Banja | 2023/05/22 06:55 | Mwendwa Mbithi v Nikola Mitrovic | 6-2,6-3 |
| ITF - M15 - Targu Jiu | 2023/08/15 10:40 | Radovan Michalik v Nikola Kolyachev | 6-2,4-6,11-9 |
| ITF - M15 - Targu Jiu | 2023/08/13 06:30 | Nikola Kolyachev v Gheorghe Claudiu Schinteie | 6-1,7-6 |
| ITF - M15 - Curtea de Arges | 2023/08/10 08:00 | Nikola Kolyachev v Luciano Emanuel Ambrogi | 1-6,4-6 |
| ITF - M15 - Curtea de Arges | 2023/08/09 07:00 | Nikola Kolyachev v Elio Jose Ribeiro Lago | 6-4,6-1 |
| ITF - M15 - Curtea de Arges | 2023/08/08 10:15 | Nikola Kolyachev v Federico Valle | 6-4,6-1 |
| ITF - M15 - Curtea de Arges | 2023/08/08 06:30 | Enrique Bogo v Nikola Kolyachev | 1-6,6-2,9-11 |
| ITF - M15 - Curtea de Arges | 2023/08/07 06:30 | Alexandru Luca v Nikola Kolyachev | 2-6,2-6 |
| ITF - M15 - Xativa | 2023/08/01 08:15 | Sam K Baumgartner v Nikola Kolyachev | 6-4,7-5 |