Stadium: Court 2 Round: 19 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2023/09/13 03:30 | Mitsuki Wei Kang Leong v Gage Brymer | 6-4,6-7,0-6 |
| ITF M15 Nakhon Si Thammarat | 2023/09/10 01:55 | Pruchya Isarow v Mitsuki Wei Kang Leong | 3-6,3-6 |
| ITF M15 Nakhon Si Thammarat | 2023/09/09 02:00 | Mitsuki Wei Kang Leong v Grigoriy Lomakin | 7-5,6-4 |
| ITF M15 Nakhon Si Thammarat | 2023/09/08 02:00 | Seon Yong Han v Mitsuki Wei Kang Leong | 1-6,6-4,4-6 |
| ITF M15 Nakhon Si Thammarat | 2023/09/07 02:00 | Mitsuki Wei Kang Leong v Thantub Suksumrarn | 2-6,7-6,7-5 |
| ITF M15 Nakhon Si Thammarat | 2023/09/05 03:50 | Mitsuki Wei Kang Leong v Congsup Congcar | 6-1,6-1 |
| ITF M15 Nakhon Si Thammarat | 2023/08/30 05:55 | Mitsuki Wei Kang Leong v Patrik Oplustil | 1-6,2-6 |
| ITF M15 Nakhon Si Thammarat | 2023/08/28 05:50 | Mitsuki Wei Kang Leong v Linh Giang Trinh | 6-0,6-1 |
| ITF M25 Sapporo | 2023/09/15 00:55 | Naoki Nakagawa v Seita Watanabe | 6-3,6-2 |
| ITF M25 Sapporo | 2023/09/13 03:00 | Seita Watanabe v Yuta Kikuchi | 6-1,6-3 |
| ITF M25 Sapporo | 2023/09/06 03:35 | Seita Watanabe v Tatsuma Ito | 6-4,4-6,4-6 |
| ITF M25 Tainan | 2023/08/23 04:20 | Ergi Kirkin v Seita Watanabe | 4-6,7-6,6-3 |
| ITF M25 Tainan | 2023/08/15 02:00 | Seita Watanabe v Takuya Kumasaka | 3-6,6-4,2-6 |
| 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 |