| ITF M15 Antalya | 2021/06/02 07:30 | Mariano Navone v Michalis Sakellaridis | 6-3,7-6 |
| ITF M15 Antalya | 2021/06/01 07:00 | Giorgio Tabacco v Michalis Sakellaridis | 6-0,4-6,7-10 |
| ITF M15 Antalya | 2021/05/31 09:30 | Michalis Sakellaridis v Edouard Villoslada | 7-6,4-6,10-4 |
| ITF M15 Antalya | 2021/05/30 07:30 | Michalis Sakellaridis v Ali Amiri | 6-3,6-2 |
| ITF M15 Antalya | 2021/05/26 07:15 | Leonardo Malgaroli v Michalis Sakellaridis | 6-1,6-2 |
| ITF M15 Antalya | 2021/05/25 07:00 | Daniil Glinka v Michalis Sakellaridis | 6-7,5-7 |
| ITF M15 Antalya | 2021/05/24 10:00 | Michalis Sakellaridis v Fletcher Scott | 6-2,0-6,11-9 |
| ITF M15 Antalya | 2021/05/16 07:00 | Santiago De La Fuente v Michalis Sakellaridis | 4-6,6-4,10-8 |
| ITF M15 Novomoskovsk | 2021/05/31 07:00 | Aliaksandr Liaonenka v Olexiy Kolisnyk | 3-6,6-3,10-8 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Olexiy Kolisnyk v Juan Ignacio Alcalde | 6-3,6-4 |
| ITF M15 Novomoskovsk | 2021/05/24 12:00 | Olexiy Kolisnyk v Alexander Zgirovsky | 7-6,2-6,8-10 |
| ITF M15 Novomoskovsk | 2021/05/23 08:00 | Olexiy Kolisnyk v Roman Boychuk | 6-4,2-6,10-8 |
| ITF M15 Cairo | 2021/05/05 11:00 | Jose Pereira v Olexiy Kolisnyk | 7-5,6-0 |
| ITF M15 Cairo | 2021/05/04 08:00 | Felix Gill v Olexiy Kolisnyk | 1-6,3-6 |
| ITF M15 Cairo | 2021/05/03 09:00 | Syed Mohd Agil Syed Naguib v Olexiy Kolisnyk | 1-6,1-6 |
| ITF M15 Cairo | 2021/05/02 10:00 | Olexiy Kolisnyk v Yuichiro Inui | 6-4,6-3 |