| UTR Pro Kawaguchi | 2024/03/03 00:30 | Kazuma Kawachi v Ryotaro Matsumura | 6-2,6-3 |
| ITF M15 Yanagawa | 2023/12/22 02:10 | Kazuma Kawachi v Ryotaro Matsumura | 6-4,4-6,6-4 |
| UTR Pro Kawaguchi | 2024/08/14 00:00 | Kazuma Kawachi v Ryo Minakata | 3-6,6-4,7-6 |
| UTR Pro Kawaguchi | 2024/08/13 01:30 | Kazuma Kawachi v Yuki Karatsu | 6-1,7-5 |
| UTR Pro Kawaguchi | 2024/08/12 03:24 | Kazuma Kawachi v Rikuto Yamaguchi | 1-6,6-3,5-0 |
| ITF M15 Nakhon Si Thammarat | 2024/07/10 02:00 | Daisuke Sumizawa v Kazuma Kawachi | 7-6,6-7,6-2 |
| ITF M15 Ust-Kamenogorsk | 2024/07/05 10:00 | Egor Agafonov v Kazuma Kawachi | 6-4,2-6,6-4 |
| ITF M15 Ust-Kamenogorsk | 2024/07/04 05:00 | Kazuma Kawachi v Maksim Shin | 6-3,0-6,6-2 |
| ITF M15 Ust-Kamenogorsk | 2024/07/03 06:05 | Daniel Ibragimov v Kazuma Kawachi | 2-6,4-6 |
| ITF M15 Ust-Kamenogorsk | 2024/06/27 05:00 | Kazuma Kawachi v Sergey Fomin | 2-6,2-6 |
| UTR Pro Kawaguchi | 2024/08/12 03:30 | Yuki Karatsu v Ryotaro Matsumura | 3-6,1-5 |
| ITF M15 Tokyo | 2024/07/10 07:25 | Sanhui Shin v Ryotaro Matsumura | 5-7,7-6,6-4 |
| ITF M15 Tokyo | 2024/07/09 02:45 | Ryotaro Matsumura v Yunseok Jang | 6-1,6-0 |
| ITF M15 Tokyo | 2024/07/08 03:30 | Ryotaro Matsumura v Taketo Takamisawa | 3-6,7-6,10-6 |
| ITF M15 Tokyo | 2024/07/04 02:00 | Naoki Nakagawa v Ryotaro Matsumura | 7-6,3-6,6-1 |
| ITF M15 Tokyo | 2024/07/03 03:30 | Hiromasa Koyama v Ryotaro Matsumura | 4-6,5-7 |
| ITF M15 Tokyo | 2024/07/02 01:00 | Ryotaro Matsumura v Ren Nakamura | 7-5,6-1 |
| ITF M15 Tokyo | 2024/07/01 01:00 | Ryotaro Matsumura v Toki Adachi | 6-2,6-1 |