Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2023/10/22 11:00 | Eleftherios Neos v Nazar Oliynykov | 3-6,6-3,13-11 |
| ITF M15 Pirot | 2023/09/04 10:00 | Lazar Vojinovic v Nazar Oliynykov | 6-3,6-3 |
| ITF M15 Pirot | 2023/09/03 11:30 | Shendrit Deari v Nazar Oliynykov | 3-6,6-3,8-10 |
| ITF M25 Osijek | 2023/08/07 12:15 | Nazar Oliynykov v Jaka Protic Zakelj | 1-6,5-7 |
| ITF M25 Osijek | 2023/08/06 10:00 | Peter Nad v Nazar Oliynykov | 2-6,6-1,5-10 |
| ITF M15 Novi Sad | 2023/08/01 11:35 | Sergei Pogosian v Nazar Oliynykov | 6-1,6-2 |
| ITF M15 Novi Sad | 2023/08/01 07:30 | Nazar Oliynykov v Marko Andrejic | 7-5,6-1 |
| ITF M15 Novi Sad | 2023/07/25 09:35 | Pavel Verbin v Nazar Oliynykov | 6-1,6-3 |
| UTR Pro Zadar | 2023/10/22 18:19 | Janos Fekete v Christos Keisidis | 6-4,2-6,4-0 |
| UTR Pro Zadar | 2023/10/22 12:35 | Janos Fekete v Filip Krolo | 6-1,6-3 |
| UTR Pro Zadar | 2023/10/20 06:00 | Maciej Rajski v Janos Fekete | 6-4,0-6,7-6 |
| UTR Pro Zadar | 2023/10/19 08:38 | Razvan Baiant v Janos Fekete | 5-7,0-6 |
| UTR Pro Zadar | 2023/10/18 06:00 | Alen Moritz Hodzic v Janos Fekete | 4-6,3-6 |
| UTR Pro Zadar | 2023/10/16 07:30 | Nik Mikovic v Janos Fekete | 5-7,4-5 |
| UTR Pro Beograd | 2023/10/15 06:00 | Domagoj Biljesko v Janos Fekete | 5-7,4-6 |
| UTR Pro Beograd | 2023/10/14 07:30 | Marko Nikolic v Janos Fekete | 2-6,4-6 |