| UTR Pro Tennis Series Ricany | 2021/09/10 07:30 | Michalis Sakellaridis v Andrey Chepelev | 0-6,2-6 |
| UTR Pro Tennis Series Ricany | 2021/09/08 12:00 | Michalis Sakellaridis v Lawrence Bataljin | 2-6,3-5 |
| UTR Pro Tennis Series Ricany | 2021/09/07 07:30 | Michalis Sakellaridis v Yanais Laurent | 2-6,3-5 |
| UTR Pro Tennis Series Ricany | 2021/09/06 12:00 | Satral, Jan v Michalis Sakellaridis | 6-2,6-2 |
| ITF M15 Bad Waltersdorf | 2021/08/30 09:00 | Alberto Morolli v Michalis Sakellaridis | 6-3,6-3 |
| ITF M15 Bad Waltersdorf | 2021/08/29 09:00 | Gleeson, Alan v Michalis Sakellaridis | 3-6,6-7 |
| ITF M15 Bad Waltersdorf | 2021/08/23 07:00 | Michalis Sakellaridis v Scott, Fletcher | 1-6,1-6 |
| ITF M15 Warmbad-Villach | 2021/08/16 12:30 | Leonardo Rossi v Michalis Sakellaridis | 7-6,6-4 |
| UTR Pro Tennis Series Ricany | 2021/09/11 07:30 | Langmajer, Dominik v Adamson, Alec | 3-6,6-3,6-3 |
| ITF M25 Ricany | 2021/08/29 12:00 | Langmajer, Dominik v Martin Machala | 3-6,3-6 |
| 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 |