Stadium: Court 7 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Nur-Sultan | 2021/07/07 07:00 | Kirill Kolganov v Petr Bar Biryukov | 2-6,1-6 |
| ITF M25 Nur-Sultan | 2021/07/06 05:55 | Petr Bar Biryukov v Danil Ozernoy | 6-3,7-6 |
| ITF M15 Antalya | 2021/06/27 06:30 | Inigo G Olasagasti v Petr Bar Biryukov | 7-6,1-6,10-5 |
| ITF M15 Shymkent | 2021/06/02 11:45 | Petr Bar Biryukov v Yan Bondarevskiy | 3-6,2-6 |
| ITF M15 Shymkent | 2021/06/01 09:20 | Antonio Campo v Petr Bar Biryukov | 4-6,6-3,10-7 |
| ITF M15 Shymkent | 2021/05/31 06:35 | Alexey Dubinin v Petr Bar Biryukov | 2-6,2-6 |
| ITF M15 Shymkent | 2021/05/24 04:00 | Louroi Martinez v Petr Bar Biryukov | 6-4,6-1 |
| ITF M15 St Petersburg | 2021/04/15 09:00 | Evgeny Tyurnev v Petr Bar Biryukov | 6-1,6-1 |
| ITF M25 Nur-Sultan | 2021/07/06 09:15 | Vladyslav Manafov v Benjamin Lock | 6-3,6-4 |
| Challenger Almaty | 2021/06/14 04:00 | Ergi Kirkin v Vladyslav Manafov | 6-2,6-3 |
| Challenger Almaty Qual | 2021/06/13 05:15 | Vladyslav Manafov v Corentin Denolly | 7-6,7-5 |
| ITF M15 Shymkent | 2021/06/04 07:00 | Vladyslav Manafov v Beibit Zhukayev | 4-6,2-6 |
| ITF M15 Shymkent | 2021/06/03 07:25 | Vladyslav Manafov v Markos Kalovelonis | 6-1,3-6,6-3 |
| ITF M15 Shymkent | 2021/06/02 11:20 | Vladyslav Manafov v Alexander Boborykin | 6-2,6-0 |
| ITF M15 Shymkent | 2021/05/26 04:00 | Vladyslav Manafov v Markos Kalovelonis | 2-6,6-3,3-6 |
| ITF M15 Shymkent | 2021/04/14 04:00 | Vladyslav Manafov v Federico Bertuccioli | 4-6,4-6 |