Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Changwon | 2023/06/14 02:50 | Rimpei Kawakami v Ji Hoon Son | 6-7,6-4,7-5 |
| ITF M25 Changwon | 2023/06/12 05:45 | Ji Hoon Son v Suk Hyun Choo | 6-3,6-3 |
| ITF M25 Changwon | 2023/06/11 02:30 | Ji Hoon Son v Giovanni Agostinetto | 6-2,6-3 |
| ITF M25 Daegu | 2023/06/06 03:55 | Minjong Park v Ji Hoon Son | 6-3,3-6,6-1 |
| Challenger Busan | 2023/05/08 04:30 | Yasutaka Uchiyama v Ji Hoon Son | 7-6,3-6,6-1 |
| Challenger Busan | 2023/05/07 07:00 | Ji Hoon Son v Egor Gerasimov | 6-4,0-6,6-1 |
| ITF M15 Sharm El Sheikh | 2023/02/27 10:00 | Gabriele Bosio v Ji Hoon Son | 6-3,7-6 |
| ITF M15 Sharm El Sheikh | 2023/02/21 08:00 | Marat Sharipov v Ji Hoon Son | 6-2,6-2 |
| ITF M25 Changwon | 2023/06/14 02:20 | Yunseok Jang v Uisung Park | 2-6,5-7 |
| ITF M25 Daegu | 2023/06/06 01:05 | Yeongseok Jeong v Yunseok Jang | 7-5,4-6,6-1 |
| Challenger Seoul | 2023/04/23 02:00 | Edan Leshem v Yunseok Jang | 6-3,6-2 |
| ITF M25 Jakarta | 2023/04/20 02:30 | Leo Borg v Yunseok Jang | 6-1,7-5 |
| ITF M25 Jakarta | 2023/04/19 02:30 | Yunseok Jang v Koki Matsuda | 7-5,6-2 |
| ITF M25 Jakarta | 2023/04/18 03:35 | Yunseok Jang v Thantub Suksumrarn | 6-1,1-6,10-6 |
| ITF M25 Jakarta | 2023/04/17 06:25 | Yunseok Jang v Ethan Cook | 6-4,6-0 |
| ITF M25 Jakarta | 2023/04/15 03:00 | Fitriadi M Rifqi v Yunseok Jang | 7-5,6-3 |