| ITF M15 Heraklion | 2023/11/14 08:30 | Kai Lemstra v Nikolay Nedelchev | 3-6,6-4,6-1 |
| ITF M15 Selva Gardena | 2023/11/01 12:05 | Kai Lemstra v Hynek Barton | 4-6,4-6 |
| ITF M15 Selva Gardena | 2023/10/30 13:20 | Massimo Giunta v Kai Lemstra | 2-6,4-6 |
| ITF M15 Bad Waltersdorf | 2023/10/05 07:30 | Kai Lemstra v Vlad Andrei Dancu | 1-6,1-6 |
| ITF M15 Bad Waltersdorf | 2023/10/03 07:20 | Jakub Filip v Kai Lemstra | 0-6,0-6 |
| ITF M15 Satu Mare | 2023/09/14 10:35 | Stefan Palosi v Kai Lemstra | 6-4,7-6 |
| ITF M15 Satu Mare | 2023/09/13 09:25 | Kai Lemstra v Simone Agostini | 6-3,6-4 |
| ITF M15 Haren | 2023/09/08 16:05 | Kai Lemstra v Thiemo De Bakker | 3-6,6-7 |
| ITF M25 Most | 2023/05/22 08:00 | Daniel Paty v Lukas Velik | 6-2,6-3 |
| ITF M25 Most | 2023/05/21 08:00 | Lukas Velik v Marcel Marlon Sudzum | 6-4,6-1 |
| ITF M25 Prague | 2023/05/16 08:00 | Mark Wallner v Lukas Velik | 6-2,6-3 |
| ITF M25 Prague | 2023/05/15 10:30 | Michal Krajci v Lukas Velik | 3-6,2-6 |
| ITF M25 Prague | 2023/05/14 10:00 | Lukas Velik v Timur Maulenov | 6-4,6-1 |
| ITF M15 Prostejov | 2022/09/25 10:30 | Lukas Velik v Daniel Orlita | 6-4,1-6,8-10 |
| ITF M25 Jablonec Nad Nisou | 2022/05/23 08:00 | Dominik Recek v Lukas Velik | 6-4,6-4 |
| ITF M25 Most | 2022/05/17 08:15 | Michel Hopp v Lukas Velik | 6-4,6-0 |