Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Changwon | 2023/06/14 01:00 | Junhyun Lee v Jangjun Kim | 6-7,6-7 |
| ITF M25 Changwon | 2023/06/12 08:30 | Junhyun Lee v Dong Ju Kim | 3-6,6-3,13-11 |
| ITF M25 Changwon | 2023/06/12 02:35 | Junhyun Lee v Dohyun Kim | 6-2,6-1 |
| ITF M25 Changwon | 2023/06/11 08:20 | Junhyun Lee v Christopher Heck | 6-2,3-6,10-6 |
| ITF M25 Canberra | 2023/03/19 23:00 | Jiayang Dong v Junhyun Lee | 4-6,6-4,10-8 |
| ITF M25 Canberra | 2023/03/13 23:00 | Alexander Klintcharov v Junhyun Lee | 6-2,6-1 |
| ITF M25 Canberra | 2023/03/13 01:30 | Cooper Errey v Junhyun Lee | 4-6,2-6 |
| ITF M25 Mumbai | 2022/11/13 05:30 | Guhan Rajan v Junhyun Lee | 5-7,6-3,10-7 |
| 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 |
| ITF M15 Antalya | 2023/04/12 11:00 | Young Seok Kim v Maxime Chazal | 4-6,3-6 |
| ITF M15 Nonthaburi | 2019/12/02 04:30 | Pol Wattanakul v Young Seok Kim | 6-3,6-4 |
| ITF M15 Nonthaburi Qual | 2019/12/01 08:25 | Chattarin Wareesri v Young Seok Kim | 1-6,2-6 |