| UTR Pro Suita | 2024/04/25 05:10 | Hiiro Sakamoto v Taketo Takamisawa | 7-5,2-6,4-6 |
| UTR Pro Suita | 2024/04/24 04:10 | Jasper Lai v Hiiro Sakamoto | 0-6,0-0 |
| UTR Pro Suita | 2024/04/23 05:12 | Ryotaro Matsumura v Hiiro Sakamoto | 6-2,6-4 |
| 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 Suita | 2024/04/25 04:13 | Yuto Okuchi v Seiya Nakanishi | 1-6,1-6 |
| UTR Pro Suita | 2024/04/24 02:31 | Ryotaro Matsumura v Seiya Nakanishi | 6-4,6-0 |
| UTR Pro Suita | 2024/04/22 04:59 | Taketo Takamisawa v Seiya Nakanishi | 6-4,4-6,7-5 |
| ITF M15 - Hinode | 2024/03/11 04:45 | Seiya Nakanishi v Shunsuke Nakagawa | 4-6,2-6 |
| ITF M15 - Hinode | 2024/03/11 01:00 | Jumpei Yamasaki v Seiya Nakanishi | 5-7,6-4,8-10 |
| ITF - M15 Yanagawa | 2023/12/25 00:30 | Kazuma Kawachi v Seiya Nakanishi | 6-3,6-0 |
| ITF - M25 Takasaki | 2023/09/17 01:00 | Ryotaro Matsumura v Seiya Nakanishi | 6-2,6-4 |
| ITF - M25 Sapporo | 2023/09/05 04:15 | Issei Okamura v Seiya Nakanishi | 6-1,6-1 |