Stadium: Court 10 Round: 62 Ground: Clay
| ITF M15 Sofia | 2023/07/03 06:30 | Nikola Kolyachev v Antonio Massara | 3-6,7-6,12-14 |
| ITF M15 Belgrade | 2023/06/25 07:00 | Bogdan Pavel v Nikola Kolyachev | 6-3,6-4 |
| ITF M15 Kursumlijska Banja | 2023/06/18 07:00 | Gabriel Matuszewski v Nikola Kolyachev | 6-4,6-4 |
| ITF M15 Kursumlijska Banja | 2023/06/12 16:50 | Joel Angel Lucero v Nikola Kolyachev | 6-2,6-0 |
| ITF M15 Kursumlijska Banja | 2023/06/11 14:00 | Nikola Kolyachev v Piotr Czaczkowski | 7-6,2-6,10-5 |
| ITF M15 Kursumlijska Banja | 2023/04/24 07:00 | Valentin Vanta v Nikola Kolyachev | 6-4,7-5 |
| ITF M15 Kursumlijska Banja | 2023/04/23 07:00 | Tarik Sehovic v Nikola Kolyachev | 2-6,0-6 |
| UTR Pro Beograd | 2023/04/22 06:00 | Nikola Kolyachev v Edison Ambarzumjan | 0-3 |
| ITF M25 Gandia | 2023/07/16 08:00 | Ivan Kazakov v Alvaro Peiro Serrano | 0-6,4-6 |
| ITF M25 Brasov | 2023/07/03 07:45 | Gian M Di Natale v Ivan Kazakov | 6-3,6-4 |
| ITF M25 Brasov | 2023/07/02 06:30 | Tudor S Gheorghita v Ivan Kazakov | 0-6,1-6 |
| ITF M25 Arlon | 2023/06/27 07:50 | Olivier Rojas v Ivan Kazakov | 6-3,6-4 |
| ITF M25 Arlon | 2023/06/26 09:10 | Adam Krischke v Ivan Kazakov | 3-6,1-6 |
| ITF M25 Mungia | 2023/06/19 09:50 | Patricio Alvarado v Ivan Kazakov | 6-4,6-0 |
| ITF M25 Mungia | 2023/06/18 13:30 | Rafael Mazon-Hernandez v Ivan Kazakov | 2-6,1-6 |
| ITF M25 Cordoba | 2023/06/04 14:00 | Ivan Kazakov v Matt Ponchet | 2-6,6-7 |