Stadium: Court 1 Round: 14 Ground: Hardcourt outdoor
| Challenger Nur-Sultan | 2021/07/12 06:30 | Andrey Kuznetsov v Yshai Oliel | 7-5,6-4 |
| Challenger Nur-Sultan | 2021/07/11 06:35 | Sanjar Fayziev v Yshai Oliel | 1-6,7-6,1-6 |
| ITF M25 Nur-Sultan | 2021/07/09 08:30 | Evgeny Karlovskiy v Yshai Oliel | 6-2,6-4 |
| ITF M25 Nur-Sultan | 2021/07/08 07:35 | Edan Leshem v Yshai Oliel | 6-7,2-6 |
| ITF M25 Santo Domingo | 2021/06/09 14:45 | Yshai Oliel v Gerardo L Villasenor | 6-7,6-1,3-6 |
| ITF M25 Santo Domingo | 2021/06/03 16:45 | Roy Smith v Yshai Oliel | 4-6,6-2,6-3 |
| ITF M25 Santo Domingo | 2021/06/03 13:00 | Peter Bertran v Yshai Oliel | 2-6,1-6 |
| ITF M15 Heraklion | 2021/05/28 06:30 | Yshai Oliel v Federico Arnaboldi | 6-7,6-2,3-6 |
| 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 07:50 | Ivan Zaytsev v Kirill Kolganov | 6-2,6-2 |
| ITF M25 Nur-Sultan | 2021/07/05 04:00 | Zhanger Almashev v Kirill Kolganov | 6-7,6-3,12-14 |
| ITF M15 Shymkent | 2021/04/14 08:45 | Kirill Kolganov v Denis Klok | 4-6,1-6 |
| ITF M15 Shymkent | 2021/04/06 07:40 | Kirill Kolganov v Danil Ozernoy | 6-7,2-6 |
| ITF M15 Shymkent | 2021/04/05 06:05 | Sharobiddin Abzalov v Kirill Kolganov | 4-6,0-6 |
| ITF M15 Nur-Sultan | 2021/02/08 04:00 | Kirill Kolganov v Aliaksandr Liaonenka | 2-6,0-6 |
| ITF M15 Nur-Sultan | 2021/02/01 05:00 | Giacomo Dambrosi v Kirill Kolganov | 6-1,6-2 |