Stadium: Court 9 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2023/09/05 02:00 | Kokoro Isomura v Daiki Yoshimura | 6-1,6-1 |
| ITF M25 Jakarta | 2023/08/17 03:50 | Kokoro Isomura v S D Prajwal Dev | 3-6,6-7 |
| ITF M25 Jakarta | 2023/08/16 02:30 | Kokoro Isomura v Rishi Reddy | 6-1,6-1 |
| ITF M25 Jakarta | 2023/08/10 02:30 | Leo Borg v Kokoro Isomura | 6-4,6-1 |
| ITF M25 Jakarta | 2023/08/09 04:00 | Kokoro Isomura v Shivank Bhatnagar | 6-3,6-1 |
| ITF M15 Nakhon Si Thammarat | 2023/07/19 03:40 | Kokoro Isomura v Jeamoon Lee | 3-6,4-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/12 03:10 | Kokoro Isomura v Patorn Hanchaikul | 0-6,0-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/06 04:25 | Kokoro Isomura v Ryuki Matsuda | 4-6,7-6,4-6 |
| ITF M25 Sapporo | 2023/09/05 02:00 | Ryota Tanuma v Yunseok Jang | 6-4,7-5 |
| 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 |