Stadium: Court 1 Round: 25 Ground: Clay
| Challenger - Bratislava | 2023/06/14 12:05 | Tomas Barrios Vera v Lukas Neumayer | 5-7,6-3,6-3 |
| Challenger - Bratislava | 2023/06/13 12:00 | Damir Dzumhur v Lukas Neumayer | 7-6,1-6,4-6 |
| Challenger - Bratislava | 2023/06/12 13:00 | Lukas Neumayer v Alibek Kachmazov | 6-4,6-2 |
| Challenger - Bratislava | 2023/06/12 08:00 | Lukas Neumayer v Lukas Palovic | 6-4,7-5 |
| ITF M25 Jablonec Nad Nisou | 2023/06/04 08:00 | Lukas Neumayer v Tim Handel | 6-2,3-6,6-1 |
| ITF M25 Jablonec Nad Nisou | 2023/06/02 11:30 | Lukas Neumayer v Stuart Parker | 6-3,6-3 |
| ITF M25 Jablonec Nad Nisou | 2023/06/01 07:55 | Lukas Neumayer v Matthew Dellavedova | 6-3,6-2 |
| ITF M25 Jablonec Nad Nisou | 2023/05/31 08:00 | Lukas Neumayer v Luca Wiedenmann | 6-4,6-4 |
| ITF M15 Nyíregyháza | 2023/06/07 09:30 | Nikita Mashtakov v Zsombor Velcz | 6-3,3-6,0-6 |
| ITF M15 Kuršumlijska Banja | 2023/06/01 07:30 | Nikita Mashtakov v Milan Drinic | 2-6,1-6 |
| ITF M15 Kuršumlijska Banja | 2023/05/30 12:30 | Nikita Mashtakov v Stefan Cizelj-Zivkovic | 6-1,6-1 |
| ITF M15 Kuršumlijska Banja | 2023/05/24 06:50 | Nikita Mashtakov v Matthew Dellavedova | 7-6,3-6,5-7 |
| ITF M15 Krško | 2023/05/18 09:35 | Nikita Mashtakov v Miha Vetrih | 0-6,0-6 |
| ITF M15 Kuršumlijska Banja | 2023/05/05 09:05 | Andrey Chepelev v Nikita Mashtakov | 6-3,6-0 |
| ITF M15 Kuršumlijska Banja | 2023/05/04 11:55 | Nikita Mashtakov v Juan Pablo Paz | 6-1,6-4 |
| ITF M15 Kuršumlijska Banja | 2023/05/03 14:35 | Viktor Jovic v Nikita Mashtakov | 2-6,3-6 |