Stadium: Court 1 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Kazan | 2022/01/19 08:40 | Leonid Sheyngezikht v Maxim Ratniuk | 6-1,6-4 |
| ITF M15 Kazan | 2021/11/25 07:00 | Bekkhan Atlangeriev v Maxim Ratniuk | 6-2,2-6,6-3 |
| ITF M15 Kazan | 2021/11/24 07:00 | Egor Novikov v Maxim Ratniuk | 1-6,6-0,1-6 |
| ITF M15 St Petersburg | 2021/04/14 07:00 | Maxim Ratniuk v Marat Deviatiarov | 7-6,6-7,6-7 |
| ITF M15 St Petersburg | 2021/04/08 07:00 | Maxim Ratniuk v Artem Dubrivnyy | 2-6,1-6 |
| ITF M15 St Petersburg | 2021/04/05 08:30 | Maxim Ratniuk v Timur Kiyamov | 6-4,6-7,12-10 |
| ITF M15 St Petersburg | 2021/04/04 07:00 | Maxim Ratniuk v Maksim Starostin | 6-4,6-0 |
| ITF M15 Kazan | 2021/03/11 08:00 | Alexandr Binda v Maxim Ratniuk | 4-6,6-3,6-4 |
| ITF M15 Nules | 2021/11/14 11:00 | Juan C Garcia Garcia v Grigoriy Korobeynikov | 3-6,6-4,11-9 |
| ITF M25 Madrid | 2021/10/25 09:30 | Pedro Rodenas v Grigoriy Korobeynikov | 6-0,6-0 |
| ITF M15 Girona | 2021/10/17 08:00 | Grigoriy Korobeynikov v Kuzey Cekirge | 0-6,5-7 |
| ITF M15 Platja D'Aro | 2021/10/10 11:00 | Grigoriy Korobeynikov v Giuseppe Tresca | 2-6,3-6 |
| ITF M15 Platja D'Aro | 2021/10/03 09:30 | Grigoriy Korobeynikov v Edas Butvilas | 3-6,2-6 |
| ITF M15 Xativa | 2021/08/02 10:00 | Xavi Matas Ortega v Grigoriy Korobeynikov | 6-0,6-0 |
| ITF M15 Xativa | 2021/08/01 13:00 | Lawrence Bataljin v Grigoriy Korobeynikov | 7-5,2-6,8-10 |
| ITF M15 Shymkent | 2021/06/01 05:00 | Yaraslav Shyla v Grigoriy Korobeynikov | 6-0,7-5 |