Stadium: Court 4 Round: 44 Ground: Clay
| ITF M15 - Lodz | 2021/08/15 11:00 | Omar Brigida v Dominik Langmajer | 6-1,6-4 |
| ITF M15 - Gdynia | 2021/08/08 08:00 | Olaf Pieczkowski v Dominik Langmajer | 6-2,6-1 |
| 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 |
| UTR Pro Tennis Series - Barcelona | 2021/06/24 08:30 | Agustin Velotti v Marcelo Zormann | 6-2,5-3 |
| UTR Pro Tennis Series - Barcelona | 2021/06/23 08:00 | Marcelo Zormann v Alvaro Bueno Gil | 6-3,5-1 |
| UTR Pro Tennis Series - Barcelona | 2021/06/22 09:30 | Marcelo Zormann v Mario Mansilla Diez | 7-5,6-3 |
| UTR Pro Tennis Series - Barcelona | 2021/06/20 07:00 | Constant De La Bassetiere v Marcelo Zormann | 6-7,1-5 |
| UTR Pro Tennis Series - Barcelona | 2021/06/13 08:30 | Antoine Escoffier v Marcelo Zormann | 6-2,5-0 |
| UTR Pro Tennis Series - Barcelona | 2021/06/12 11:30 | Marcelo Zormann v Oscar Jose Gutierrez | 3-0 |
| UTR Pro Tennis Series - Barcelona | 2021/06/11 08:00 | Marcelo Zormann v Xavier Gabarro | 5-7,3-6 |
| UTR Pro Tennis Series - Barcelona | 2021/06/10 11:00 | Marcelo Zormann v Diego F Flores | 7-6,6-4 |