Stadium: Court 7 Round: 28 Ground: Hardcourt indoor
| 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 |
| ITF M25 Nur-Sultan | 2021/07/07 04:00 | Martin Borisiouk v Olimjon Nabiev | 6-2,6-0 |
| ITF M25 Nur-Sultan | 2021/07/06 08:10 | Martin Borisiouk v Timur Mukhtarulin | 6-1,6-3 |
| ITF M15 St Petersburg | 2021/04/12 07:00 | Alafia Ayeni v Martin Borisiouk | 6-4,1-6,10-8 |
| ITF M15 Kazan | 2021/10/14 10:50 | Ivan Liutarevich v Alexander Zgirovsky | 3-6,6-4,6-1 |
| ITF M15 Kazan | 2021/10/13 12:00 | Alexander Zgirovsky v Grigoriy Lomakin | 3-6,6-2,6-4 |
| Davis Cup | 2021/09/19 16:05 | Diego Schwartzman v Alexander Zgirovsky | 6-1,6-2 |
| ITF M15 Telavi | 2021/08/03 07:35 | Alexander Zgirovsky v Grigoriy Lomakin | 6-3,1-6,2-6 |
| ITF M25 Telavi | 2021/07/30 08:05 | Boris Butulija v Alexander Zgirovsky | 6-2,7-6 |
| ITF M15 Novomoskovsk | 2021/06/04 12:30 | Danylo Kalenichenko v Alexander Zgirovsky | 6-2,6-3 |
| ITF M15 Novomoskovsk | 2021/06/03 11:45 | Alexander Zgirovsky v Gabriel Donev | 6-2,3-6,10-8 |
| ITF M15 Novomoskovsk | 2021/05/31 13:45 | Alexander Zgirovsky v Piotr Pawlak | 6-3,6-1 |