Ground: Clay
| ITF M15 Wroclaw | 2023/06/29 07:50 | Nikita Mashtakov v Jiri Barnat | 3-6,6-4,4-6 |
| ITF M15 Wroclaw | 2023/06/27 08:00 | Nikita Mashtakov v Thiago Cigarran | 7-6,7-6 |
| ITF M25 Poprad | 2023/06/21 09:30 | Lukas Neumayer v Nikita Mashtakov | 3-6,6-3,6-4 |
| ITF M15 Nyiregyhaza | 2023/06/07 09:30 | Nikita Mashtakov v Zsombor Velcz | 6-3,3-6,0-6 |
| ITF M15 Kursumlijska Banja | 2023/06/01 07:30 | Nikita Mashtakov v Milan Drinic | 2-6,1-6 |
| ITF M15 Kursumlijska Banja | 2023/05/30 12:30 | Nikita Mashtakov v Stefan Cizelj-Zivkovic | 6-1,6-1 |
| ITF M15 Kursumlijska Banja | 2023/05/24 06:50 | Nikita Mashtakov v Matthew Dellavedova | 7-6,3-6,5-7 |
| ITF M15 Krsko | 2023/05/18 09:35 | Nikita Mashtakov v Miha Vetrih | 0-6,0-6 |
| UTR Pro Hilversum | 2023/06/10 07:30 | Pepijn Bastiaansen v Victor Sklenka | 6-3,5-1 |
| UTR Pro Hilversum | 2023/06/09 06:00 | Ivan Sergeyev v Victor Sklenka | 6-4,6-7,6-0 |
| UTR Pro Hilversum | 2023/06/08 08:00 | Quentin Robert v Victor Sklenka | 6-3,3-6,2-5 |
| UTR Pro Hilversum | 2023/06/06 06:00 | Guy Den Heijer v Victor Sklenka | 7-6,4-6,5-3 |
| UTR Pro Hilversum | 2023/06/05 11:00 | Victor Sklenka v Julian Cundom | 4-6,6-7 |
| ITF M25 Jablonec Nad Nisou | 2023/05/28 10:30 | Victor Sklenka v Filip Apltauer | 2-6,4-6 |
| ITF M25 Most | 2023/05/23 09:35 | Tom Gentzsch v Victor Sklenka | 6-3,6-3 |
| ITF M25 Most | 2023/05/22 09:00 | Victor Sklenka v Ondrej Horak | 2-6,7-5,10-4 |