| UTR Pro Suita | 2024/04/22 04:39 | Jasper Lai v Ryotaro Matsumura | 0-6,0-6 |
| ITF M15 Tsukuba | 2024/03/30 02:00 | Ryotaro Matsumura v Kokoro Isomura | 1-6,6-7 |
| ITF M15 Tsukuba | 2024/03/29 06:15 | Ryotaro Matsumura v Sanhui Shin | 7-6,6-7,7-6 |
| ITF M15 Tsukuba | 2024/03/27 05:30 | Vit Kalina v Ryotaro Matsumura | 6-3,0-6,2-6 |
| ITF M15 Tsukuba | 2024/03/25 07:30 | Ryotaro Matsumura v Jumpei Yamasaki | 7-5,7-6 |
| ITF M15 Tsukuba | 2024/03/24 01:00 | Yeongseok Jeong v Ryotaro Matsumura | 3-6,4-6 |
| ITF M15 Nishi-Tokyo | 2024/03/19 01:00 | Leo Vithoontien v Ryotaro Matsumura | 3-6,6-4,10-6 |
| ITF M15 Hinode | 2024/03/11 05:40 | Ryotaro Matsumura v Gen Nakamura | 3-6,5-7 |
| UTR Pro Kawaguchi | 2024/03/10 01:30 | Kai Kawano v Hiiro Sakamoto | 4-6,3-6 |
| UTR Pro Kawaguchi | 2024/03/09 05:15 | Hiiro Sakamoto v Ryoto Tachi | 6-4,6-3 |
| UTR Pro Kawaguchi | 2024/03/08 05:00 | Hiiro Sakamoto v Yuto Miyagawa | 6-1,6-4 |
| UTR Pro Kawaguchi | 2024/03/07 06:03 | Hiiro Sakamoto v Haruki Katsushima | 4-6,6-7 |
| UTR Pro Kawaguchi | 2024/03/07 00:04 | Koki Takada v Hiiro Sakamoto | 5-7,3-6 |
| UTR Pro Kawaguchi | 2024/03/04 23:30 | Masaya Kobayashi v Hiiro Sakamoto | 5-7,5-7 |
| UTR Pro Taipei | 2023/12/23 07:16 | Hiiro Sakamoto v Yan Cheng Chen | 6-4,5-3 |
| UTR Pro Taipei | 2023/12/22 02:30 | Hiiro Sakamoto v Hao-Yu Lin | 6-2,6-3 |