Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| Challenger Nur-Sultan | 2021/07/12 07:00 | Jason Kubler v Dostanbek Tashbulatov | 6-1,6-3 |
| ITF M25 Nur-Sultan | 2021/07/08 10:50 | Dostanbek Tashbulatov v Lucas Catarina | 3-6,4-6 |
| ITF M25 Nur-Sultan | 2021/07/06 07:55 | Dostanbek Tashbulatov v Dmitry Bezborodov | 6-2,6-1 |
| Challenger Almaty | 2021/06/14 08:40 | Joao Menezes v Dostanbek Tashbulatov | 6-2,6-0 |
| Challenger Almaty | 2021/06/06 06:35 | Dostanbek Tashbulatov v Vladyslav Orlov | 0-6,1-6 |
| ITF M15 Shymkent | 2021/06/03 05:00 | Grigoriy Lomakin v Dostanbek Tashbulatov | 6-2,6-4 |
| ITF M15 Shymkent | 2021/06/02 05:00 | Dostanbek Tashbulatov v Jack Gibbens | 6-2,6-3 |
| ITF M15 Shymkent | 2021/05/25 09:15 | Dostanbek Tashbulatov v Tak Khunn Wang | 1-6,0-6 |
| ITF M25 Marburg | 2021/07/07 14:35 | Ivan Nedelko v Nick Hardt | 5-7,7-6,4-6 |
| Challenger Almaty | 2021/06/06 06:45 | Benjamin Hassan v Ivan Nedelko | 6-2,6-2 |
| ITF M15 Novomoskovsk | 2021/06/03 12:15 | Ivan Nedelko v Aidan Mayo | 6-2,6-3 |
| ITF M15 Novomoskovsk | 2021/05/28 07:15 | Ivan Nedelko v Carlos Sanchez Jover | 4-6,3-6 |
| ITF M15 Novomoskovsk | 2021/05/27 12:00 | Ivan Nedelko v Nikita Alosha | 6-0,6-1 |
| ITF M15 Novomoskovsk | 2021/05/26 09:05 | Ivan Nedelko v Gabriel Donev | 6-3,6-4 |
| ITF M15 Antalya | 2021/05/20 07:30 | Luca Nardi v Ivan Nedelko | 7-5,6-2 |
| ITF M15 Antalya | 2021/05/19 10:00 | Paul Woerner v Ivan Nedelko | 7-6,5-7,4-6 |