Stadium: Court 12 Round: 62 Ground: Clay
| ITF - M15 Platja d'Aro | 2021/10/11 08:30 | Michalis Sakellaridis v Lorenzo Joaquin Rodriguez | 1-6,2-6 |
| UTR Pro Tennis Series - Zadar | 2021/10/03 11:00 | Borna Devald v Michalis Sakellaridis | 6-3,7-5 |
| UTR Pro Tennis Series - Zadar | 2021/10/02 13:00 | Filip Maric v Michalis Sakellaridis | 2-6,2-5 |
| UTR Pro Tennis Series - Zadar | 2021/10/01 09:30 | Deni Zmak v Michalis Sakellaridis | 6-2,7-5 |
| UTR Pro Tennis Series - Zadar | 2021/09/30 12:00 | Ivan Liutarevich v Michalis Sakellaridis | 6-7,5-6 |
| UTR Pro Tennis Series - Zadar | 2021/09/29 15:00 | Maxim Krapivin v Michalis Sakellaridis | 2-6,2-6 |
| UTR Pro Tennis Series - Zadar | 2021/09/27 11:00 | Ivan Denisov v Michalis Sakellaridis | 6-2,5-1 |
| ITF - M25 Pardubice | 2021/09/19 11:00 | Michalis Sakellaridis v Alan F R Fierros | 6-7,6-4,3-10 |
| ITF - M15 Xativa | 2021/08/01 10:00 | Gerard Oltra Guiral v Max Alcala Gurri | 1-6,0-6 |
| ITF - M25 Uriage | 2021/07/12 09:00 | Gerard Oltra Guiral v Youcef Rihane | 2-6,2-6 |
| ITF - M25 Uriage | 2021/07/11 14:00 | Gerard Oltra Guiral v Baptiste Rey | 6-2,7-6 |