Stadium: COURT 1 Round: 26 Ground: Hardcourt indoor
| ATP Moscow | 2021/10/16 12:05 | Damir Dzumhur v Maxim Zhukov | 6-7,6-0,6-4 |
| ITF M15 Kazan | 2021/11/24 11:05 | Nikita Ianin v Martin Borisiouk | 6-7,5-7 |
| ITF M15 Kazan | 2021/11/23 08:50 | Martin Borisiouk v Alexey Dubinin | 6-2,6-4 |
| ITF M15 Kazan | 2021/11/22 08:55 | Martin Borisiouk v Artem Cherepin | 6-0,7-5 |
| ITF M15 Telavi | 2021/08/03 09:45 | Martin Borisiouk v Gabriel Donev | 3-6,2-6 |
| ITF M15 Telavi | 2021/08/02 10:15 | Martin Borisiouk v Alexander Boborykin | 6-0,3-6,10-6 |
| ITF M15 Telavi | 2021/08/02 06:00 | Martin Borisiouk v Mikhail Malakhovich | 6-2,6-0 |
| ITF M25 Telavi | 2021/07/26 13:55 | Martin Borisiouk v Omer Yeshaya | 3-6,6-4,10-12 |
| ITF M25 Nur-Sultan | 2021/07/08 05:00 | Yu Hsiou Hsu v Martin Borisiouk | 6-0,2-6,6-3 |