Stadium: Court 4 Round: 62 Ground: Clay
| 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 Most | 2021/05/23 08:00 | Alexander Wolfschmidt v Maurus Malgiaritta | 6-4,3-6,10-7 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 07:30 | Alexander Wolfschmidt v Daniel Paty | 6-7,5-7 |
| ITF M25 Prague | 2021/05/09 07:30 | Alexander Wolfschmidt v Kristof Minarik | 3-6,7-6,6-10 |
| ITF M15 St Petersburg | 2021/04/14 11:55 | Naoki Tajima v Alexander Wolfschmidt | 6-1,6-2 |
| ITF M15 St Petersburg | 2021/04/06 07:00 | Alexander Wolfschmidt v Aristarkh Safonov | 6-4,1-6,5-7 |
| ITF M25 Trimbach | 2021/03/08 15:35 | Alexander Wolfschmidt v Jan Sebesta | 2-6,4-6 |
| ITF M15 St Petersburg | 2021/02/10 12:15 | Jan Choinski v Alexander Wolfschmidt | 6-3,6-2 |
| ITF M15 St Petersburg | 2021/02/02 11:10 | Alexey Zakharov v Alexander Wolfschmidt | 6-1,6-2 |