Stadium: Green Tennis Plaza - Court 05 Ground: Hardcourt outdoor
Referee:
| ITF M15 Tanagura | 2025/10/22 00:30 | Ryusuke Horiuchi v Shunsuke Nakagawa | 6-7,2-6 |
| ITF M15 Tokyo | 2025/07/08 01:00 | Yuto Oki v Ryusuke Horiuchi | 6-3,6-4 |
| ITF M15 Luan | 2025/06/09 06:00 | Ryusuke Horiuchi v Emiliano Jorquera | 6-4,3-6,0-1 |
| ITF M15 Luan | 2025/06/04 08:00 | Xing Dao Chen v Ryusuke Horiuchi | 6-4,6-7,6-4 |
| ITF M15 Luan | 2025/04/09 03:30 | Fajing Sun v Ryusuke Horiuchi | 6-2,6-1 |
| ITF M15 Nishi-Tokyo | 2025/03/18 04:00 | Moerani Bouzige v Ryusuke Horiuchi | 6-1,6-1 |
| ITF M15 Hinode | 2025/03/13 01:00 | Ryusuke Horiuchi v Daisuke Sumizawa | 2-6,2-6 |
| UTR Pro Yokohama | 2024/12/01 02:19 | Ryusuke Horiuchi v Kai Kawano | 3-6,2-6 |
| UTR Pro Kawaguchi | 2025/10/05 04:35 | Kohtaro Kuriyama v Ryuichiro Nakano | 3-6,6-3,3-6 |
| UTR Pro Kawaguchi | 2025/10/05 00:20 | Ryuichiro Nakano v Kosuke Morita | 6-1,7-5 |
| UTR Pro Kawaguchi | 2025/10/03 01:00 | Ryuichiro Nakano v Haruto Ishikawa | 7-6,6-3 |
| UTR Pro Kawaguchi | 2025/10/02 03:40 | Ryuichiro Nakano v Taketo Takamisawa | 4-6,1-6 |
| UTR Pro Kawaguchi | 2025/09/30 02:25 | Ryuichiro Nakano v Dylan Leeman | 2-6,2-6 |
| UTR Pro Kawaguchi | 2025/09/29 03:00 | Hien Q H Pham v Ryuichiro Nakano | 5-7,2-6 |
| UTR Pro Kawaguchi | 2025/05/04 01:00 | Kenta Nakamura v Ryuichiro Nakano | 3-6,5-7 |
| UTR Pro Kawaguchi | 2025/05/03 02:50 | Yuta Dokai v Ryuichiro Nakano | 3-6,2-6 |