Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Jakarta | 2023/01/25 06:30 | Taisei Ichikawa v Yunseok Jang | 6-4,6-1 |
| 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 |
| ITF M25 Jakarta | 2023/04/14 02:30 | Yunseok Jang v Evgeny Donskoy | 7-6,4-6,7-6 |
| ITF M25 Jakarta | 2023/04/13 02:30 | Yunseok Jang v Hady Habib | 6-4,3-6,6-0 |
| ITF M25 Jakarta | 2023/04/27 03:45 | Taisei Ichikawa v Hanyi Liu | 6-4,5-7,3-6 |
| ITF M25 Jakarta | 2023/04/20 04:10 | Taisei Ichikawa v Yanki Erel | 1-6,5-7 |
| ITF M25 Jakarta | 2023/04/18 03:30 | Justin Barki v Taisei Ichikawa | 6-3,2-6,5-7 |
| ITF M25 Jakarta | 2023/04/12 02:00 | Tristan Schoolkate v Taisei Ichikawa | 4-6,6-2,6-4 |
| ITF M25 Jakarta | 2023/04/11 02:00 | Taisei Ichikawa v Andrew Rogers | 2-6,7-6,11-9 |
| ITF M25 Jakarta | 2023/04/10 04:30 | Taisei Ichikawa v Patrik Oplustil | 6-2,6-3 |
| ITF M25 Kashiwa | 2023/04/03 05:05 | Taisei Ichikawa v Hikaru Shiraishi | 4-6,2-6 |
| ITF M25 Kashiwa | 2023/04/02 04:00 | Taisei Ichikawa v Yamato Sueoka | 6-0,7-6 |