Stadium: Court 20 Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/06/27 06:30 | Ivan Kazakov v Stefanos Sakellaridis | 1-6,4-6 |
| ITF M15 Antalya | 2021/06/20 07:00 | Ivan Kazakov v Ray Ho | 2-6,1-6 |
| ITF M15 Tbilisi | 2021/05/18 05:30 | Aleksandr Braynin v Ivan Kazakov | 6-2,6-2 |
| ITF M15 Tbilisi | 2021/05/17 05:30 | Ivan Kazakov v Roman Nashatyrkin | 6-1,6-1 |
| ITF M15 Tbilisi | 2021/05/16 06:00 | Egor Baklanov v Ivan Kazakov | 6-7,6-3,1-10 |
| ITF M15 Antalya | 2021/04/18 07:00 | Leopold Zima v Ivan Kazakov | 6-0,6-3 |
| ITF M25 La Nucia | 2021/03/14 08:00 | Ivan Kazakov v Diego A B Sanchez | 0-6,1-6 |
| ITF M25 Telavi | 2021/07/27 08:50 | Boris Butulija v Oleksandr Bielinskyi | 3-6,6-4,10-3 |
| ITF M25 Telavi | 2021/07/26 07:30 | Tamerlan Evloev v Oleksandr Bielinskyi | 2-6,1-6 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Oleksandr Bielinskyi v Simon Habsuda | 6-3,3-6,8-10 |
| ITF M15 Novomoskovsk | 2021/05/27 07:15 | Oleksandr Bielinskyi v Nikita Mashtakov | 6-3,1-6,5-7 |
| ITF M15 Novomoskovsk | 2021/05/26 10:45 | Viacheslav Bielinskyi v Oleksandr Bielinskyi | 6-7,6-4,0-6 |
| ITF M15 Novomoskovsk | 2021/05/25 11:30 | Cengiz Aksu v Oleksandr Bielinskyi | 5-7,1-6 |
| ITF M15 Novomoskovsk | 2021/05/25 06:15 | Oleksandr Bielinskyi v Juan Ignacio Alcalde | 6-2,6-2 |
| ITF M15 Novomoskovsk | 2021/05/23 10:30 | Denis Parshutin v Oleksandr Bielinskyi | 2-6,3-6 |