Stadium: Court 1 Round: 44 Ground: Hardcourt outdoor
| 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 |
| ITF M15 Antalya | 2020/12/06 07:00 | Klim Kozyrev v Emir Sendogan | 1-6,3-6 |
| ITF M15 Antalya | 2020/11/29 06:00 | Klim Kozyrev v Suleyman Deniz Gursoy | 4-6,4-6 |
| ITF M15 Kazan | 2020/03/09 09:10 | Klim Kozyrev v Viktor Nikitin | 3-6,6-4,10-12 |
| ITF M25 Aktobe | 2020/02/17 05:00 | Klim Kozyrev v Aliaksandr Bulitski | 5-7,3-6 |
| ITF M25 Almaty | 2019/09/23 04:00 | Vladislav Sveridenko v Klim Kozyrev | 6-2,2-6,10-3 |
| ITF M15 Shymkent | 2019/09/17 05:10 | Alexander Ovcharov v Klim Kozyrev | 6-0,6-1 |