Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/05/27 08:30 | Yuta Kikuchi v Yunseong Chung | 2-6,6-3,1-6 |
| ITF - M15 Monastir | 2021/05/26 09:30 | Louis Tessa v Yunseong Chung | 1-6,0-6 |
| ITF - M15 Monastir | 2021/05/23 08:30 | Beale, Jeremy v Yunseong Chung | 4-6,2-6 |
| ITF - M15 Monastir | 2021/05/22 08:30 | Thomas Fancutt v Yunseong Chung | 5-7,4-6 |
| ITF - M15 Monastir | 2021/05/21 08:30 | Gustavo Heide v Yunseong Chung | 3-6,3-6 |
| ITF - M15 Monastir | 2021/05/20 08:25 | Lukas Neumayer v Yunseong Chung | 1-6,4-6 |
| ITF - M15 Monastir | 2021/05/18 09:50 | Kos, Dorian v Yunseong Chung | 2-6,1-6 |
| ITF - M15 Monastir | 2021/05/16 08:30 | Dougaz, Aziz v Yunseong Chung | 1-6,5-7 |
| Nur Sultan, Kazakhstan | 2021/07/12 06:30 | Bondarevskiy, Yan v Benjamin Lock | 2-6,7-6,6-2 |
| Nur Sultan, Kazakhstan | 2021/07/11 04:00 | Alexey Zakharov v Bondarevskiy, Yan | 7-5,4-6,2-6 |
| ITF M25 Nur-Sultan | 2021/07/08 07:30 | Andrey Kuznetsov v Bondarevskiy, Yan | 6-3,6-2 |
| ITF M25 Nur-Sultan | 2021/07/07 04:00 | Bondarevskiy, Yan v Novikov, Egor | 6-4,6-4 |
| ITF - M15 Shymkent | 2021/06/06 04:00 | Bondarevskiy, Yan v Edoardo Lavagno | 7-5,2-6,3-6 |
| ITF - M15 Shymkent | 2021/06/05 05:00 | Bondarevskiy, Yan v Ivan Gakhov | 7-6,6-4 |
| ITF - M15 Shymkent | 2021/06/04 07:00 | Bondarevskiy, Yan v Aleksandre Metreveli | 6-4,7-5 |
| ITF - M15 Shymkent | 2021/06/03 09:30 | Denis Yevseyev v Bondarevskiy, Yan | 2-6,6-3,1-6 |