Stadium: Court 2 Round: 54 Ground: Hardcourt outdoor
| ITF M15 - Shymkent | 2021/04/12 03:55 | Felipe Mikkelsen v Ivan Zaytsev | 6-3,6-1 |
| ITF M15 - Shymkent | 2021/04/06 05:30 | Bulat Galiev v Ivan Zaytsev | 7-6,6-4 |
| ITF M15 - Shymkent | 2021/04/05 08:45 | Roman Konovalov v Ivan Zaytsev | 0-6,0-6 |
| ITF M15 - Antalya | 2021/03/15 08:30 | Ivan Zaytsev v Sidane Pontjodikromo | 2-6,4-6 |
| ITF M15 - Antalya | 2021/03/14 07:00 | Jim Walder v Ivan Zaytsev | 4-6,2-6 |
| ITF M15 - Antalya | 2021/03/07 07:00 | Denis Parshutin v Ivan Zaytsev | 6-4,6-3 |
| ITF M15 - Nur-Sultan | 2021/02/08 04:00 | Matteo Arnaldi v Ivan Zaytsev | 6-2,6-3 |
| ITF M15 - Nur-Sultan | 2021/02/01 07:30 | Ivan Liutarevich v Ivan Zaytsev | 6-3,6-4 |
| ITF M25 - Nur-Sultan | 2021/07/05 04:00 | Zhanger Almashev v Kirill Kolganov | 6-7,6-3,12-14 |
| ITF M15 - Shymkent | 2021/04/14 08:45 | Kirill Kolganov v Denis Klok | 4-6,1-6 |
| ITF M15 - Shymkent | 2021/04/06 07:40 | Kirill Kolganov v Danil Ozernoy | 6-7,2-6 |
| ITF M15 - Shymkent | 2021/04/05 06:05 | Sharobiddin Abzalov v Kirill Kolganov | 4-6,0-6 |
| ITF M15 - Nur-Sultan | 2021/02/08 04:00 | Kirill Kolganov v Aliaksandr Liaonenka | 2-6,0-6 |
| ITF M15 - Nur-Sultan | 2021/02/01 05:00 | Giacomo Dambrosi v Kirill Kolganov | 6-1,6-2 |