Stadium: Court 7 Round: 54 Ground: Hardcourt outdoor
| ITF - M25 Sapporo | 2023/09/07 02:50 | Ko Suzuki v Ryotaro Taguchi | 6-4,6-3 |
| ITF - M25 Sapporo | 2023/09/05 04:55 | Hikaru Shiraishi v Ryotaro Taguchi | 4-6,6-4,0-6 |
| ITF - M25 Sapporo | 2023/09/04 03:20 | Ryotaro Taguchi v Naoya Honda | 6-0,0-6,4-10 |
| ITF - M25 Sapporo | 2023/09/03 01:00 | Ryotaro Taguchi v Camden Camacho | 6-1,6-2 |
| ITF - M15 Nakhon Si Thammarat | 2023/08/28 07:10 | Ryotaro Taguchi v Seon Yong Han | 4-6,3-6 |
| ITF - M15 Nakhon Si Thammarat - kvalifikácia | 2023/08/27 10:00 | Ryotaro Taguchi v Songrit D Chanbubpha | 6-0,6-0 |
| ITF - M15 Nakhon Si Thammarat | 2023/08/24 02:00 | Khumoyun Sultanov v Ryotaro Taguchi | 6-3,6-4 |
| ITF - M15 Nakhon Si Thammarat | 2023/08/23 03:50 | Ryotaro Taguchi v Francois Musitelli | 6-4,6-4 |
| ITF - M25 Sapporo | 2023/09/10 01:00 | Kenta Nakamura v Shunsuke Nakagawa | 4-6,2-6 |
| ITF - M15 Karuizawa | 2023/05/28 01:15 | Shunsuke Nakagawa v Shunrou Takeshima | 6-3,3-6,8-10 |
| ITF - M15 Monastir | 2023/04/26 10:40 | Shunsuke Nakagawa v Aziz Ouakaa | 7-6,6-7,3-6 |
| ITF - M15 Monastir | 2023/04/24 13:00 | Rayen Hermassi v Shunsuke Nakagawa | 2-6,1-6 |
| ITF - M15 Monastir | 2023/04/24 08:00 | Shunsuke Nakagawa v Thomas George Brun | 6-2,6-3 |
| ITF - M15 Monastir | 2023/04/20 09:30 | Ye Cong Mo v Shunsuke Nakagawa | 6-2,6-0 |
| ITF - M15 Monastir | 2023/04/19 11:10 | Shunsuke Nakagawa v Szymon Kielan | 6-4,6-1 |
| ITF - M15 Monastir | 2023/04/17 12:30 | Shunsuke Nakagawa v Omar Brigida | 6-1,7-5 |