Stadium: Court 3 Round: 54 Ground: Hardcourt indoor
| ITF - M15 Sharm El Sheikh | 2021/11/15 11:30 | Nikita Ianin v Adrian Oetzbach | 6-7,3-6 |
| ITF - M15 Sharm El Sheikh | 2021/11/14 13:30 | Seth Seely v Nikita Ianin | 1-6,6-4,7-10 |
| ITF - M15 Sharm El Sheikh | 2021/11/01 10:00 | Nikita Ianin v Mason Recci | 4-6,3-6 |
| ITF - M15 Sharm El Sheikh | 2021/10/24 13:30 | Nikita Ianin v Roy Hobbs | 7-5,6-7,4-10 |
| ITF - M15 Kazan | 2021/10/12 07:00 | Aristarkh Safonov v Nikita Ianin | 6-0,6-3 |
| ITF - M15 Kazan | 2021/10/11 09:50 | Egor Khotchenkov v Nikita Ianin | 6-3,6-7,3-10 |
| ITF - M15 Monastir | 2021/08/02 08:30 | Nikita Ianin v Martin Dimitrov | 4-6,6-3,5-10 |
| ITF - M15 Monastir | 2021/07/25 12:00 | Siddhant Banthia v Nikita Ianin | 1-6,7-6,10-5 |
| ITF - M25 Nur-Sultan | 2021/10/26 07:10 | Igor Trunov v Klim Kozyrev | 6-4,4-6,10-7 |
| ITF - M25 Nur-Sultan | 2021/10/25 08:20 | Tamerlan Evloev v Klim Kozyrev | 3-6,4-6 |
| ITF - M25 Nur-Sultan | 2021/10/19 05:05 | Daniel Ibragimov v Klim Kozyrev | 6-3,6-2 |
| ITF - M25 Nur-Sultan | 2021/10/18 09:05 | Yerassyl Murat v Klim Kozyrev | 6-3,0-6,5-10 |
| ITF - M15 Kazan | 2021/10/11 11:10 | Bogdan Seleznev v Klim Kozyrev | 1-6,6-3,10-1 |
| ITF - M15 Sozopol | 2021/09/12 10:00 | Mert Ramadan v Klim Kozyrev | 7-6,6-2 |
| ITF - M15 St Petersburg | 2021/04/04 09:50 | Sarp Agabigun v Klim Kozyrev | 6-3,6-0 |
| ITF - M15 Kazan | 2021/03/08 06:50 | Klim Kozyrev v Maxim Krapivin | 3-6,7-5,4-10 |