Stadium: Sub Court B Round: 25 Ground: Hardcourt outdoor
| Challenger Matsuyama | 2022/11/06 01:00 | Ryota Tanuma v Naoki Nakagawa | 3-6,4-6 |
| Challenger Yokohama | 2022/11/01 05:55 | Damir Dzumhur v Ryota Tanuma | 6-3,6-1 |
| Challenger Yokohama | 2022/10/31 01:30 | Rimpei Kawakami v Ryota Tanuma | 6-7,6-4,4-6 |
| Challenger Seoul | 2022/10/09 06:00 | Hamad Medjedovic v Ryota Tanuma | 6-4,6-3 |
| ATP Tokyo | 2022/10/01 07:55 | Ryota Tanuma v Ramkumar Ramanathan | 5-7,3-6 |
| ITF M25 - Kashiwa | 2022/10/01 02:45 | Rimpei Kawakami v Ryota Tanuma | 6-3,6-2 |
| ITF M25 - Kashiwa | 2022/09/30 01:00 | Ryota Tanuma v Koki Matsuda | 7-6,6-3 |
| ITF M25 - Kashiwa | 2022/09/29 01:00 | Ryota Tanuma v Asahi Harazaki | 7-5,6-4 |
| ITF M15 - Nakhon Si Thammarat | 2023/08/29 03:40 | Yunseok Jang v Congsup Congcar | 2-6,0-6 |
| ITF M15 - Nakhon Si Thammarat | 2023/08/23 06:30 | Yuttana Charoenphon v Yunseok Jang | 4-6,7-5,7-6 |
| ITF M25 - Anseong | 2023/06/22 02:00 | Yunseok Jang v Yuki Mochizuki | 4-6,3-6 |
| ITF M25 - Anseong | 2023/06/20 02:00 | Ji Hoon Son v Yunseok Jang | 6-4,3-6,0-6 |
| 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 |