Estádio: Court 7 Round: 25 Ground: Hardcourt outdoor
| ITF - M25 Sapporo | 2022/08/30 01:00 | Takuya Kumasaka v Yuichiro Inui | 1-6,6-3,6-4 |
| ITF - M25 Herzlia | 2023/08/09 07:30 | Yuichiro Inui v Demetris Azoides | 3-6,6-7 |
| ITF - M15 Ra'anana | 2023/08/01 07:05 | Boris Pokotilov v Yuichiro Inui | 6-7,6-3,5-7 |
| ITF - M15 Jacarta | 2023/06/28 02:00 | Yuichiro Inui v Kazuma Kawachi | 6-3,6-7,5-7 |
| ITF - M15 Jacarta | 2023/06/21 06:00 | Cihan Akay v Yuichiro Inui | 6-1,6-7,6-0 |
| ITF - M15 Jacarta | 2023/06/15 02:00 | Yuichiro Inui v Millen Hurrion | 1-6,3-6 |
| ITF - M15 Jacarta | 2023/06/14 02:00 | Timothy Phung v Yuichiro Inui | 6-4,3-6,1-6 |
| ITF - M25 Jacarta | 2023/06/08 02:00 | Hiroki Moriya v Yuichiro Inui | 6-2,6-2 |
| ITF - M25 Jacarta | 2023/06/07 02:00 | Yuichiro Inui v Anthony Susanto | 3-6,6-4,6-4 |
| ITF - M25 Hong Kong | 2023/09/03 02:00 | Takuya Kumasaka v Kasidit Samrej | 3-6,6-1,5-10 |
| ITF - M25 Hong Kong | 2023/08/31 02:00 | Tsung-Hao Huang v Takuya Kumasaka | 6-1,2-6,1-6 |
| ITF - M25 Hong Kong | 2023/08/29 03:40 | Ki Lung NG v Takuya Kumasaka | 6-4,0-6,1-6 |
| ITF - M25 Tainan | 2023/08/25 02:00 | Ergi Kirkin v Takuya Kumasaka | 6-2,6-2 |
| ITF - M25 Tainan | 2023/08/24 05:10 | Kai-I Wang v Takuya Kumasaka | 4-6,6-3,2-6 |
| ITF - M25 Tainan | 2023/08/17 04:05 | Tsung-Hao Huang v Takuya Kumasaka | 6-2,4-6,7-6 |
| ITF - M25 Tainan | 2023/08/15 02:00 | Seita Watanabe v Takuya Kumasaka | 3-6,6-4,2-6 |
| ITF - M15 Nakhon Si Thammarat | 2023/07/20 02:00 | Takuya Kumasaka v Palaphoom Kovapitukted | 6-3,0-6,4-6 |