Stadium: Court 4 Round: 62 Ground: Clay
| UTR Pro Beograd | 2023/04/22 06:00 | Nikola Kolyachev v Edison Ambarzumjan | 0-3 |
| UTR Pro Beograd | 2023/04/21 07:30 | Nikola Kolyachev v Strahinja Rakic | 7-6,4-6,3-6 |
| UTR Pro Beograd | 2023/04/20 06:00 | Nikola Kolyachev v Luka Pavlovic | 3-6,2-6 |
| UTR Pro Beograd | 2023/04/19 07:30 | Matija Samardzic v Nikola Kolyachev | 3-6,6-1,6-4 |
| UTR Pro Beograd | 2023/04/18 06:00 | Maxime Hamou v Nikola Kolyachev | 6-1,6-1 |
| ITF M15 Sozopol | 2022/10/16 10:00 | Adam Jurajda v Nikola Kolyachev | 7-6,6-3 |
| ITF M15 Sozopol | 2022/10/10 08:00 | Berk Ilkel v Nikola Kolyachev | 6-1,6-4 |
| ITF M15 Sozopol | 2022/10/09 09:00 | Nikola Kolyachev v Mateusz Kulakowski | 7-6,6-1 |