Estadio: Court 7 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Nueva Delhi | 2023/03/15 07:55 | Palaphoom Kovapitukted v Yunseok Jang | 4-6,6-7 |
| ITF M25 Nueva Delhi | 2023/03/14 04:30 | Yunseok Jang v Oges T Jaya Prakash | 6-1,6-1 |
| ITF M25 Nueva Delhi | 2023/03/13 05:50 | Yunseok Jang v Neeraj Yashpaul | 6-4,6-1 |
| ITF M15 Aktobe | 2023/03/08 10:00 | David Perez Sanz v Yunseok Jang | 6-4,6-0 |
| ITF M15 Aktobe | 2023/03/02 06:30 | Arslanbek Aitkulov v Yunseok Jang | 2-6,6-4,6-2 |
| ITF M15 Aktobe | 2023/02/28 10:30 | Yerassyl Yerdilda v Yunseok Jang | 3-6,2-6 |
| ITF M15 Yakarta | 2023/01/25 06:30 | Taisei Ichikawa v Yunseok Jang | 6-4,6-1 |
| ITF M15 Yakarta | 2023/01/24 05:00 | Yunseok Jang v Bang Shuo Yin | 6-4,6-4 |
| ITF M25 Nueva Delhi | 2023/03/15 09:55 | Woobin Shin v Shuichi Sekiguchi | 7-5,5-7,3-6 |
| ITF M15 Aktobe | 2023/03/02 09:25 | Federico Bertuccioli v Shuichi Sekiguchi | 7-6,4-6,4-4 |
| ITF M15 Aktobe | 2023/03/01 09:55 | Adrian Oetzbach v Shuichi Sekiguchi | 3-6,4-6 |
| ITF M25 Burnie | 2023/02/09 00:50 | Adam Walton v Shuichi Sekiguchi | 6-1,6-7,7-6 |
| ITF M25 Burnie | 2023/02/08 04:00 | Shuichi Sekiguchi v Corey Gaal | 6-2,7-5 |
| Challenger de Burnie | 2023/02/01 00:25 | Adam Walton v Shuichi Sekiguchi | 6-3,6-2 |
| Challenger de Burnie | 2023/01/30 03:00 | Shuichi Sekiguchi v Dane Sweeny | 6-2,6-4 |
| Challenger de Yokkaichi | 2022/11/22 03:50 | Sho Shimabukuro v Shuichi Sekiguchi | 6-4,6-3 |