Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Yanagawa | 2023/12/27 03:55 | Taiyo Yamanaka v Shunsuke Nakagawa | 6-4,4-6,5-7 |
| ITF - M15 Yanagawa | 2023/12/26 00:30 | Hiroki Sakagawa v Shunsuke Nakagawa | 5-7,4-6 |
| ITF - M15 Yanagawa | 2023/12/25 00:30 | Yusuke Kusuhara v Shunsuke Nakagawa | 4-6,2-6 |
| ITF - M15 Yanagawa | 2023/12/18 01:00 | Shunsuke Nakagawa v Hong-Lin Fu | 4-6,6-7 |
| Challenger - Matsuyama | 2023/11/08 02:35 | Taro Daniel v Shunsuke Nakagawa | 6-1,6-2 |
| ITF - M25 Takasaki | 2023/09/18 03:10 | Collin Altamirano v Shunsuke Nakagawa | 6-3,6-2 |
| ITF - M25 Takasaki | 2023/09/17 05:00 | Daiki Yoshimura v Shunsuke Nakagawa | 1-6,1-6 |
| ITF - M25 Sapporo | 2023/09/11 00:50 | Ryotaro Taguchi v Shunsuke Nakagawa | 6-2,6-2 |
| ITF - M15 Yanagawa | 2023/12/26 01:30 | Wishaya Trongcharoenchaikul v Sanhui Shin | 1-6,2-6 |
| ITF - M15 Yanagawa | 2023/12/23 00:30 | Sanhui Shin v Taisei Ichikawa | 5-7,6-3,3-6 |
| ITF - M15 Yanagawa | 2023/12/22 07:25 | Sanhui Shin v Kazuma Kawachi | 6-1,6-2 |
| ITF - M15 Yanagawa | 2023/12/21 03:45 | Sanhui Shin v Kokoro Isomura | 6-3,5-7,7-6 |
| ITF - M15 Yanagawa | 2023/12/21 00:30 | Sanhui Shin v Ko Suzuki | 6-1,6-4 |
| Challenger - Kobe | 2023/11/12 02:25 | Sanhui Shin v Yunseong Chung | 3-6,3-6 |
| Challenger - Matsuyama | 2023/11/05 04:00 | Tatsuma Ito v Sanhui Shin | 7-6,6-3 |
| ITF - M25 Sapporo | 2023/09/12 07:10 | Sanhui Shin v Kousuke Ogura | 7-5,4-6,6-7 |