Stadium: Court 1 Round: 54 Ground: Carpet indoor
| ITF M15 Opava | 2021/11/14 11:00 | Jakub Novak v Lukas Velik | 7-6,5-7,9-11 |
| ITF M25 Prague | 2021/10/04 11:15 | Daniel Paty v Lukas Velik | 6-3,6-4 |
| ITF M25 Prague | 2021/10/03 11:30 | Lukas Velik v Mark Havlicek | 4-6,6-3,10-7 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 10:00 | Lukas Velik v Jiri Jenicek | 4-6,0-6 |
| ITF M15 Opava | 2021/11/14 12:30 | Patrik Jancovic v Dominik Kellovsky | 1-6,1-6 |
| ITF M15 Parnu | 2021/10/27 08:25 | Ben Jones v Dominik Kellovsky | 6-3,7-5 |
| ITF M25 Hamburg | 2021/10/19 09:55 | Dominik Kellovsky v Rudolf Molleker | 4-6,6-7 |
| ITF M25 Hamburg | 2021/10/17 16:00 | Adrian Obert v Dominik Kellovsky | 4-6,1-6 |
| ITF M25 Hamburg | 2021/10/17 09:00 | Noel Larwig v Dominik Kellovsky | 2-6,2-6 |
| ITF M25 Prague | 2021/10/06 10:15 | Dominik Kellovsky v Milos Karol | 5-7,4-6 |
| ITF M25 Prague | 2021/10/04 09:35 | Dominik Kellovsky v Sizya Ernest Kivanda | 6-3,7-5 |
| ITF M25 Prague | 2021/10/03 09:00 | Dominik Kellovsky v Krystof Zapsky | 6-3,6-0 |