| ITF Greece F6 | 2018/10/27 09:00 | Stefanos Sakellaridis v Michalis Sakellaridis | 4-6,4-6 |
| UTR Pro Tennis Series Ricany | 2021/09/17 12:00 | Stefanos Sakellaridis v Petr Hajek | 6-7,2-6 |
| UTR Pro Tennis Series Ricany | 2021/09/11 10:30 | Dominik Kellovsky v Stefanos Sakellaridis | 7-5,5-1 |
| UTR Pro Tennis Series Ricany | 2021/09/09 07:30 | Dominik Suc v Stefanos Sakellaridis | 5-7,6-7 |
| UTR Pro Tennis Series Ricany | 2021/09/07 09:00 | Filip Duda v Stefanos Sakellaridis | 4-6,6-4,5-2 |
| ITF M15 Bad Waltersdorf | 2021/08/31 07:00 | Luigi Sorrentino v Stefanos Sakellaridis | 6-0,5-7,10-7 |
| ITF M15 Bad Waltersdorf | 2021/08/22 09:00 | Joshua Peck v Stefanos Sakellaridis | 1-6,6-3,11-9 |
| ITF M15 Warmbad-Villach | 2021/08/17 07:30 | Lorenzo Vatteroni v Stefanos Sakellaridis | 7-6,6-2 |
| ITF M15 Warmbad-Villach | 2021/08/16 12:30 | Leon Benedict v Stefanos Sakellaridis | 4-6,3-6 |
| UTR Pro Tennis Series Ricany | 2021/09/17 07:30 | Dominik Kellovsky v Michalis Sakellaridis | 6-2,6-3 |
| UTR Pro Tennis Series Ricany | 2021/09/12 10:30 | Michalis Sakellaridis v Dominik Langmajer | 6-2,5-2 |
| 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 |