| UTR Pro Tennis Series Ricany | 2021/09/08 12:00 | Michalis Sakellaridis v Lawrence Bataljin | 2-6,3-5 |
| 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 Torello | 2021/10/31 08:30 | Gerard Oltra Guiral v Michalis Sakellaridis | 2-6,2-6 |
| ITF M15 Madrid | 2021/10/27 08:00 | Michalis Sakellaridis v Vladislav Ivanov | 1-6,4-6 |
| ITF M25 Madrid | 2021/10/26 08:00 | Jorge Martinez Martinez v Michalis Sakellaridis | 6-3,6-4 |
| ITF M25 Madrid | 2021/10/25 10:30 | Daniel L Salmeron v Michalis Sakellaridis | 1-6,3-6 |
| ITF M15 Girona | 2021/10/18 10:30 | Michalis Sakellaridis v Lucas Bouquet | 1-6,5-7 |
| UTR Pro Tennis Series Amsterdam | 2021/11/06 09:00 | Lawrence Bataljin v Edison Ambarzumjan | 3-6,6-2,1-6 |
| UTR Pro Tennis Series Amsterdam | 2021/11/05 09:00 | Jip Van Assendelft v Lawrence Bataljin | 7-6,6-2 |
| UTR Pro Tennis Series Amsterdam | 2021/11/04 12:00 | Miko Wassermann v Lawrence Bataljin | 6-1,6-3 |
| UTR Pro Tennis Series Amsterdam | 2021/11/03 10:30 | Guy Den Heijer v Lawrence Bataljin | 6-0,6-3 |
| UTR Pro Tennis Series Amsterdam | 2021/11/01 13:30 | Johann Willems v Lawrence Bataljin | 6-1,5-1 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 07:00 | Eric Vanshelboim v Lawrence Bataljin | 6-1,5-3 |
| UTR Pro Tennis Series Nis | 2021/10/09 11:00 | Christos Keisidis v Lawrence Bataljin | 6-4,6-2 |
| UTR Pro Tennis Series Nis | 2021/10/08 16:45 | Lawrence Bataljin v Oleksandr Bielinskyi | 7-5,5-7,0-5 |