Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Decatur | 2021/08/05 17:55 | Jumpei Yamasaki v Yunseong Chung | 2-6,2-6 |
| ITF M25 Monastir | 2022/01/19 09:50 | Egor Tsarapkin v Jumpei Yamasaki | 2-6,4-6 |
| ITF M25 Monastir | 2022/01/17 08:00 | Jumpei Yamasaki v Daniel Bagnolini | 6-1,6-0 |
| ITF M25 Monastir | 2022/01/12 08:00 | Jumpei Yamasaki v Dan Added | 4-6,4-6 |
| ITF M25 Setubal | 2021/10/06 10:00 | Jumpei Yamasaki v Sebastian Fanselow | 6-4,4-6,4-6 |
| ITF M25 Skopje | 2021/09/29 11:50 | Aldin Setkic v Jumpei Yamasaki | 7-5,6-4 |
| ITF M15 Monastir | 2021/08/26 07:30 | Kyle Seelig v Jumpei Yamasaki | 6-0,7-5 |
| ITF M15 Monastir | 2021/08/25 07:30 | Keisuke Saitoh v Jumpei Yamasaki | 1-6,1-6 |
| ITF M15 Monastir | 2021/08/18 07:30 | Mateo Nicolas Martinez v Jumpei Yamasaki | 5-7,6-1,7-5 |
| ITF M25 Monastir | 2022/01/18 10:45 | Alexander Donski v Yunseong Chung | 4-6,2-6 |
| ITF M25 Monastir | 2022/01/15 08:25 | Yunseong Chung v Skander Mansouri | 6-4,3-6,4-6 |
| ITF M25 Monastir | 2022/01/14 12:00 | Yunseong Chung v Josh Reid | 6-2,6-0 |
| ITF M25 Monastir | 2022/01/12 08:00 | Yunseong Chung v Skander Mezouar | 6-0,6-2 |
| ITF M25 Meitar | 2021/11/03 09:55 | Arnaud Bovy v Yunseong Chung | 6-4,3-6,6-4 |
| ITF M25 Meitar | 2021/11/02 08:00 | Joshua Luck v Yunseong Chung | 3-6,1-6 |
| Challenger Columbus | 2021/09/21 14:00 | Yunseong Chung v Ji Sung Nam | 6-3,4-6,6-7 |
| Challenger Columbus | 2021/09/20 14:00 | Alexis Galarneau v Yunseong Chung | 4-6,4-6 |