Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Changwon | 2023/06/15 01:55 | Jangjun Kim v Jeamoon Lee | 0-6,1-6 |
| ITF M25 Changwon | 2023/06/14 01:00 | Junhyun Lee v Jangjun Kim | 6-7,6-7 |
| Challenger Seoul | 2022/10/11 01:30 | Jangjun Kim v Rinky Hijikata | 1-6,2-6 |
| ITF M15 Daegu | 2022/08/31 08:05 | Kazuma Kawachi v Jangjun Kim | 6-4,1-6,7-5 |
| ITF M15 Changwon | 2022/08/25 04:05 | Yuta Kawahashi v Jangjun Kim | 6-1,6-4 |
| ITF M15 Changwon | 2022/08/23 03:05 | Thomas P Smith v Jangjun Kim | 6-3,3-6,2-6 |
| ITF M15 Anseong | 2022/08/17 02:10 | Jangjun Kim v Takuto Niki | 5-7,2-6 |
| ITF M15 Anseong | 2022/08/15 05:55 | Jangjun Kim v Sion Kwon | 6-1,6-2 |
| ITF M25 Anseong | 2023/06/19 06:50 | Young Seok Kim v Kenta Nakamura | 6-0,6-2 |
| ITF M25 Anseong | 2023/06/19 02:55 | Young Seok Kim v Byeonghun Kim | 6-0,6-1 |
| ITF M25 Anseong | 2023/06/18 05:15 | Junhyun Lee v Young Seok Kim | 2-6,3-6 |
| ITF M25 Changwon | 2023/06/12 02:45 | Jungwoong Na v Young Seok Kim | 6-2,6-2 |
| ITF M25 Changwon | 2023/06/11 08:35 | Young Seok Kim v Hyeondeok Yoon | 6-2,6-4 |
| ITF M25 Daegu | 2023/06/04 01:00 | Jake Delaney v Young Seok Kim | 6-2,4-6,12-10 |
| Challenger Busan | 2023/05/07 08:45 | Yasutaka Uchiyama v Young Seok Kim | 6-3,6-1 |
| Challenger Seoul | 2023/04/23 04:30 | Yasutaka Uchiyama v Young Seok Kim | 6-1,6-0 |