Stadion: Court 2 Round: 25 Ground: Clay
| ITF - M25 - Astana | 2023/08/03 10:50 | Khumoyun Sultanov v Seita Watanabe | 4-6,6-3,7-5 |
| ITF - M25 - Astana | 2023/08/02 10:25 | Seita Watanabe v Timur Maulenov | 3-6,6-3,6-2 |
| ITF - M25 - Astana | 2023/08/01 05:20 | Seita Watanabe v Mykhailo Mossur | 6-4,6-3 |
| ITF - M25 - Astana | 2023/07/31 05:40 | Seita Watanabe v Vitaliy Zatsepin | 6-2,6-2 |
| Challenger - Astana | 2023/07/23 10:35 | Seita Watanabe v Egor Agafonov | 2-6,2-6 |
| ITF - M15 - Monastir | 2023/07/19 14:20 | Seita Watanabe v Gilbert S K Junior | 2-6,6-2,2-6 |
| ITF - M15 - Monastir | 2023/07/17 15:00 | Seita Watanabe v Vyacheslav Ovchinnikov | 6-2,6-2 |
| ITF - M15 - Monastir | 2023/07/16 08:00 | Seita Watanabe v Alberto Bronzetti | 6-2,6-3 |
| ITF - M15 - Nakhon Si Thammarat | 2023/07/20 02:00 | Takuya Kumasaka v Palaphoom Kovapitukted | 6-3,0-6,4-6 |
| ITF - M15 - Nakhon Si Thammarat | 2023/07/18 02:00 | Takuya Kumasaka v Amir Milushev | 6-0,6-1 |
| ITF - M15 - Nakhon Si Thammarat | 2023/07/14 02:00 | Kasidit Samrej v Takuya Kumasaka | 6-1,6-3 |
| ITF - M15 - Nakhon Si Thammarat | 2023/07/13 02:00 | Takuya Kumasaka v Yusuke Takahashi | 6-4,6-7,6-3 |
| ITF - M15 - Nakhon Si Thammarat | 2023/07/11 02:00 | Takuya Kumasaka v Karan Singh | 6-2,6-2 |
| ITF - M15 - Nakhon Si Thammarat | 2023/07/05 02:00 | Kasidit Samrej v Takuya Kumasaka | 6-3,6-2 |
| ITF - M25 - Anseong | 2023/06/22 04:00 | Daisuke Sumizawa v Takuya Kumasaka | 7-5,7-6 |
| ITF - M25 - Anseong | 2023/06/21 02:00 | Takuya Kumasaka v Daiki Yoshimura | 6-2,6-0 |