Stadium: Court 11 Round: 62 Ground: Clay
| ITF M25 - Wroclaw | 2021/06/28 09:30 | Alibek Kachmazov v Olaf Pieczkowski | 6-0,6-1 |
| ITF M25 - Wroclaw | 2021/06/27 11:00 | Tomas Lanik v Olaf Pieczkowski | 2-6,3-6 |
| Polen - National Tour | 2020/07/15 10:55 | Olaf Pieczkowski v Daniel Michalski | 2-6,3-6 |
| ITF M25 - Grodzisk Mazowiecki | 2021/08/01 09:55 | Dominik Langmajer v Yujiro Onuma | 3-6,3-6 |
| ITF M15 - Castelo Branco | 2021/07/26 11:00 | Adan Freire Da Silva v Dominik Langmajer | 6-3,6-2 |
| ITF M15 - Castelo Branco | 2021/07/25 16:00 | Mark Owen Endler v Dominik Langmajer | 3-6,6-2,5-10 |
| ITF M25 - Wroclaw | 2021/06/27 14:00 | Dominik Langmajer v Mateusz Terczynski | 1-6,3-6 |
| ITF M15 - Gaiba | 2021/06/07 09:45 | Francesco Vilardo v Dominik Langmajer | 7-5,6-3 |
| ITF M15 - Jerusalem | 2021/05/09 08:30 | Alexandros Skorilas v Dominik Langmajer | 6-2,6-0 |
| ITF M15 - Sharm El Sheikh | 2021/03/21 13:00 | Dominik Langmajer v Kousuke Ogura | 3-6,2-6 |
| ITF M15 - Sharm El Sheikh | 2021/03/14 07:00 | Dominik Langmajer v Emiliano Troche | 2-6,4-6 |