Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Tsukuba | 2023/03/27 04:00 | Kazuki Nishiwaki v Toru Horie | 6-3,6-0 |
| ITF M15 Aktobe | 2023/03/10 06:00 | Aliaksandr Liaonenka v Kazuki Nishiwaki | 7-5,6-0 |
| ITF M15 Aktobe | 2023/03/09 06:35 | Kazuki Nishiwaki v Islam Orynbasar | 7-6,7-6 |
| ITF M15 Aktobe | 2023/03/08 04:55 | Kazuki Nishiwaki v Maxim Zhukov | 6-3,7-6 |
| ITF M25 Monastir | 2023/02/20 09:50 | Kazuki Nishiwaki v Yannik Steinegger | 6-4,3-6,1-10 |
| ITF M25 Monastir | 2023/02/19 11:00 | Kazuki Nishiwaki v Nicolas Philibert | 5-7,6-0,11-9 |
| ITF M25 Monastir | 2023/02/15 10:35 | Kazuki Nishiwaki v Amr Asrawy | 5-7,4-6 |
| ITF M25 Monastir | 2023/02/13 14:00 | Bingyu Yu v Kazuki Nishiwaki | 0-6,1-6 |
| Challenger Pune | 2023/02/28 13:00 | Miljan Zekic v Yunseong Chung | 6-3,6-4 |
| Challenger Pune | 2023/02/27 07:05 | Jay Clarke v Yunseong Chung | 6-7,3-6 |
| Challenger Pune | 2023/02/26 10:30 | Nitin Kumar Sinha v Yunseong Chung | 2-6,2-6 |
| Challenger Bengaluru | 2023/02/20 07:25 | Nikola Milojevic v Yunseong Chung | 7-6,6-4 |
| Challenger Bengaluru | 2023/02/19 11:15 | Dayne Kelly v Yunseong Chung | 6-7,4-6 |
| Challenger Manama | 2023/02/12 08:00 | Yunseong Chung v Aleksandr Braynin | 5-7,4-6 |
| Challenger Concepcion | 2023/01/22 15:30 | Karol Drzewiecki v Yunseong Chung | 6-3,6-2 |
| Challenger Piracicaba | 2023/01/17 17:15 | Carlos Sanchez Jover v Yunseong Chung | 6-3,6-0 |