Stadium: Court 3 Round: 25 Ground: Hardcourt indoor
| Challenger St. Petersburg | 2021/02/28 09:20 | Alessandro Bega v Alexey Zakharov | 6-4,6-2 |
| Challenger Nur-Sultan | 2021/02/22 04:00 | Pavel Kotov v Alexey Zakharov | 7-5,1-6,6-3 |
| Challenger Nur-Sultan | 2021/02/21 07:05 | Grigoriy Lomakin v Alexey Zakharov | 2-6,3-6 |
| ITF M15 St Petersburg | 2021/02/10 07:00 | Matic Spec v Alexey Zakharov | 4-6,6-1,6-3 |
| ITF M15 St Petersburg | 2021/02/07 08:00 | Alexey Zakharov v Alibek Kachmazov | 4-6,7-5,4-6 |
| ITF M15 St Petersburg | 2021/02/06 08:00 | Jan Choinski v Alexey Zakharov | 6-7,1-6 |
| ITF M15 St Petersburg | 2021/02/05 08:30 | Alexey Zakharov v Martin Krumich | 7-5,6-1 |
| ITF M15 St Petersburg | 2021/02/04 07:00 | Alexey Zakharov v Karlis Ozolins | 4-6,6-2,7-6 |
| ITF M15 Nur-Sultan | 2021/02/03 06:05 | Eric Vanshelboim v Igor Kudriashov | 6-4,7-5 |
| ITF M15 Antalya | 2021/01/11 07:00 | Igor Kudriashov v Evgeny Philippov | 7-5,2-6,14-12 |
| ITF M15 Kazan | 2020/03/10 07:00 | Igor Kudriashov v Alexander Stepin | 4-6,2-6 |
| ITF M15 Kazan | 2020/03/09 07:00 | Gleb Blekher v Igor Kudriashov | 2-6,6-3,8-10 |
| ITF M15 Antalya | 2020/01/29 09:30 | Dragos Dima v Igor Kudriashov | 6-2,6-4 |