| 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 |
| ITF M15 Warmbad-Villach | 2021/08/15 15:30 | Michalis Sakellaridis v Francisco Vittar | 7-6,4-6,13-11 |
| UTR Pro Tennis Series Ricany | 2021/09/09 10:00 | Yanais Laurent v Andrey Chepelev | 0-6,4-6 |
| UTR Pro Tennis Series Ricany | 2021/09/07 07:30 | Jan Satral v Andrey Chepelev | 6-2,6-4 |
| UTR Pro Tennis Series Ricany | 2021/09/06 12:00 | Andrey Chepelev v Lawrence Bataljin | 6-1,6-3 |
| ITF M25 Oviedo | 2021/09/01 08:00 | Andrey Chepelev v Nicolas Alvarez | 6-4,1-6,3-6 |
| ITF M25 Oviedo | 2021/08/31 11:40 | Andrey Chepelev v Miguel Avendano Cadena | 6-2,7-5 |
| ITF M25 Santander | 2021/08/26 09:00 | Andrey Chepelev v Oscar Jose Gutierrez | 3-6,5-7 |
| ITF M25 Santander | 2021/08/24 10:55 | Andrey Chepelev v Savva Polukhin | 4-6,7-6,6-0 |
| UTR Pro Tennis Series Barcelona | 2021/08/15 08:00 | Andrey Chepelev v Marat Deviatiarov | 6-1,6-7,2-6 |