Stadium: Court 4 Round: 44 Ground: Clay
| ITF M25 Poznan | 2021/08/22 08:00 | Langmajer, Dominik v Marcelo Zormann | 4-6,1-6 |
| ITF M15 Lodz | 2021/08/15 11:00 | Omar Brigida v Langmajer, Dominik | 6-1,6-4 |
| ITF M15 Gdynia | 2021/08/08 08:00 | Olaf Pieczkowski v Langmajer, Dominik | 6-2,6-1 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/01 09:55 | Langmajer, Dominik v Onuma, Yujiro | 3-6,3-6 |
| ITF M15 Castelo Branco | 2021/07/26 11:00 | Adan Freire Da Silva v Langmajer, Dominik | 6-3,6-2 |
| ITF M15 Castelo Branco | 2021/07/25 16:00 | Endler, Mark Owen v Langmajer, Dominik | 3-6,6-2,5-10 |
| ITF M25 Wroclaw | 2021/06/27 14:00 | Langmajer, Dominik v Terczynski, Mateusz | 1-6,3-6 |
| ITF M15 Gaiba | 2021/06/07 09:45 | Vilardo, Francesco v Langmajer, Dominik | 7-5,6-3 |
| ITF M15 Bratislava | 2021/08/16 10:30 | Boris Butulija v Martin Machala | 6-0,6-3 |
| ITF M15 Poprad | 2021/07/06 11:25 | Milos Karol v Martin Machala | 6-3,6-4 |
| ITF M25 Most | 2021/05/23 14:00 | Martin Machala v Recek, Dominik | 4-6,0-6 |