Stadium: Center Court Round: 62 Ground: Hardcourt outdoor
| UTR Pro Tennis Series Barcelona | 2021/12/06 10:30 | Michalis Sakellaridis v Andres F Canovas | 4-6,6-4,6-2 |
| UTR Pro Tennis Series Zadar | 2021/11/19 15:30 | Michalis Sakellaridis v Ivan Mikhaylyuk | 0-3 |
| UTR Pro Tennis Series Zadar | 2021/11/18 09:00 | Michalis Sakellaridis v Petar Pjevcevic | 6-3,7-6 |
| UTR Pro Tennis Series Zadar | 2021/11/15 13:30 | Michalis Sakellaridis v Domagoj Biljesko | 1-6,1-6 |
| UTR Pro Tennis Series Zadar | 2021/11/14 13:00 | Michalis Sakellaridis v Lawrence Bataljin | 6-7,3-5 |
| ITF M15 Benicarlo | 2021/11/07 11:00 | Juan C Garcia Garcia v Michalis Sakellaridis | 7-5,3-6,10-12 |
| ITF M15 Torello | 2021/11/03 12:25 | Michalis Sakellaridis v Pol Amoros Ramos | 0-6,3-6 |
| ITF M15 Torello | 2021/11/02 09:00 | Kuzey Cekirge v Michalis Sakellaridis | 6-2,6-3 |
| ITF M15 Sharm El Sheikh | 2021/11/14 13:30 | Seth Seely v Nikita Ianin | 1-6,6-4,7-10 |
| ITF M15 Sharm El Sheikh | 2021/11/07 15:30 | Seth Seely v Ben Jones | 2-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/10/31 13:30 | Seth Seely v Astur Martinez Irigoyen | 6-4,3-6,9-11 |
| ITF M15 Sharm El Sheikh | 2021/10/25 10:30 | Pijus Vaitiekunas v Seth Seely | 6-1,6-3 |
| ITF M15 Sharm El Sheikh | 2021/10/24 14:30 | Mark Neyelov v Seth Seely | 3-6,3-6 |
| ITF M15 Sharm El Sheikh | 2021/10/18 10:30 | Seth Seely v Noppadol Noikor | 3-6,3-6 |
| ITF M15 Sharm El Sheikh | 2021/10/17 13:30 | Seth Seely v Roy Hobbs | 7-6,3-6,10-7 |
| ITF M15 Sharm El Sheikh | 2021/10/11 09:30 | Seth Seely v Louis Allen | 4-6,6-1,7-10 |