| 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 | Jan Satral 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 | Alan Gleeson v Michalis Sakellaridis | 3-6,6-7 |
| ITF M15 Bad Waltersdorf | 2021/08/23 07:00 | Michalis Sakellaridis v Fletcher Scott | 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 | 2021/09/10 10:30 | Adam Krischke v Krystof Zapsky | 4-6,1-3 |