Stadium: Court 1 Round: 54 Ground: Carpet indoor
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Peter Goldsteiner v Ondrej Valek | 6-2,6-2 |
| ITF M15 Poprad | 2021/07/04 08:00 | Samuel Puskar v Ondrej Valek | 7-5,6-1 |
| ITF M25 Most | 2021/05/25 08:00 | Ondrej Valek v Sean Cuenin | 2-6,2-6 |
| ITF M25 Most | 2021/05/24 08:00 | Ondrej Valek v Alexander Wolfschmidt | 6-2,6-3 |
| ITF M25 Most | 2021/05/23 14:00 | George Loffhagen v Ondrej Valek | 4-6,1-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 11:30 | Ondrej Valek v Lucas Bouquet | 7-5,2-6,7-10 |
| ITF M25 Prague | 2021/05/09 08:30 | Ondrej Valek v Jean Thirouin | 6-3,6-7,4-10 |
| Challenger Prostejov | 2019/06/02 08:00 | Roman Jebavy v Ondrej Valek | 6-4,6-3 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/02 13:00 | Yujiro Onuma v Vojtech Vlkovsky | 1-6,0-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/02 07:55 | Vojtech Vlkovsky v Martyn Pawelski | 6-1,7-6 |
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Lukas Pokorny v Vojtech Vlkovsky | 7-6,6-4 |
| ITF M25 Most | 2021/05/24 09:00 | Stepan Mruzek v Vojtech Vlkovsky | 7-6,6-2 |
| ITF M25 Most | 2021/05/23 14:00 | Vojtech Vlkovsky v Daniel Paty | 7-6,6-3 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 07:30 | Andrew Paulson v Vojtech Vlkovsky | 6-1,6-4 |
| ITF M25 Prague | 2021/05/09 11:00 | Vojtech Vlkovsky v Petr Michnev | 6-2,5-7,8-10 |
| Czechia Extraliga | 2020/12/14 10:35 | David Poljak v Vojtech Vlkovsky | 6-0,6-1 |