Ground: Hardcourt outdoor
| ITF M15 Nishi-Tama | 2019/03/05 03:00 | Tomohiro Masabayashi v Yuichiro Inui | 6-2,6-1 |
| ITF Japan F7 | 2018/06/04 01:00 | Yuichiro Inui v Tomohiro Masabayashi | 5-7,3-6 |
| ITF M25 Anning | 2025/04/30 03:00 | Tomohiro Masabayashi v Akira Santillan | 4-6,3-6 |
| ITF M15 Luan | 2025/04/24 02:00 | Egor Agafonov v Tomohiro Masabayashi | 6-1,6-1 |
| ITF M15 Luan | 2025/04/22 03:30 | Charles Chen v Tomohiro Masabayashi | 2-6,3-6 |
| ITF M15 Luan | 2025/04/15 03:30 | Daniil Sarksian v Tomohiro Masabayashi | 6-3,6-4 |
| ITF M15 Kashiwa | 2025/04/04 01:00 | Yusuke Takahashi v Tomohiro Masabayashi | 6-3,6-1 |
| ITF M15 Kashiwa | 2025/04/01 03:41 | Tomohiro Masabayashi v Taisei Ichikawa | 6-1,1-6,6-4 |
| ITF M15 Nonthaburi | 2025/03/19 03:00 | Yunseok Jang v Tomohiro Masabayashi | 6-0,6-4 |
| ITF M15 Nonthaburi | 2025/03/15 03:00 | Petr Bar Biryukov v Tomohiro Masabayashi | 6-3,7-6 |
| 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 M15 Osaka | 2025/04/15 01:00 | Yuichiro Inui v Riku Takahata | 6-3,3-6,0-1 |
| ITF M25 Swan Hill | 2025/03/19 02:00 | Yuichiro Inui v Jason Kubler | 3-6,3-6 |