Ground: Hardcourt outdoor
| ITF M15 Karuizawa | 2025/06/04 06:18 | Yuichiro Inui v Yu Tanaka | 2-6,7-6,4-6 |
| ITF M25 Baotou | 2025/05/07 03:00 | Mukund Sasikumar v Yuichiro Inui | 6-0,0-0 |
| ITF M25 Anning | 2025/05/02 04:00 | Yuichiro Inui v Woobin Shin | 4-6,4-6 |
| ITF M25 Anning | 2025/05/01 02:30 | Akira Santillan v Yuichiro Inui | 3-6,2-6 |
| ITF M25 Anning | 2025/04/30 03:00 | Zekai Li v Yuichiro Inui | 6-4,5-7,4-6 |
| ITF M15 Osaka | 2025/04/23 02:00 | Yuichiro Inui v Sora Fukuda | 4-6,6-3,5-7 |
| ITF M15 Osaka | 2025/04/21 03:30 | Yuichiro Inui v Shu Muto | 6-3,6-3 |
| ITF M15 Osaka | 2025/04/16 08:01 | Tsung-Hao Huang v Yuichiro Inui | 6-2,6-3 |
| ITF M25 Changwon | 2025/06/03 05:06 | Shunsuke Nakagawa v Dong Ju Kim | 2-6,3-6 |
| ITF M15 Daegu | 2025/05/29 01:00 | Pawit Sornlaksup v Shunsuke Nakagawa | 6-4,6-7,6-4 |
| ITF M15 Daegu | 2025/05/28 02:30 | Nick Chappell v Shunsuke Nakagawa | 6-4,0-6,4-6 |
| ITF M15 Daegu | 2025/05/26 06:00 | Shunsuke Nakagawa v Seungmin Park | 6-2,7-6 |
| ITF M15 Kashiwa | 2025/04/05 03:40 | Yusuke Takahashi v Shunsuke Nakagawa | 7-6,7-5 |
| ITF M15 Kashiwa | 2025/04/04 03:15 | Daisuke Sumizawa v Shunsuke Nakagawa | 6-7,6-2,2-6 |
| ITF M15 Kashiwa | 2025/04/02 06:50 | Shunsuke Nakagawa v Masamichi Imamura | 6-4,6-4 |
| ITF M15 Nishi-Tokyo | 2025/03/20 02:30 | Shunsuke Nakagawa v Takuya Kumasaka | 3-6,3-6 |