Stadium: Royal SC Tennis - Court 01 Ground: Hardcourt outdoor
Referee:
| ITF M25 Takasaki | 2023/09/18 00:50 | Ryotaro Matsumura v Natsuki Yamamoto | 6-2,6-1 |
| UTR Pro Noda | 2025/01/09 00:00 | Kotaro Mochizuki v Natsuki Yamamoto | 6-4,6-2 |
| UTR Pro Noda | 2025/01/08 00:40 | Maxime Mareschal-Hay v Natsuki Yamamoto | 2-6,6-2,7-6 |
| ITF M15 Sharm El Sheikh | 2024/11/17 14:00 | Markus Molder v Natsuki Yamamoto | 6-7,6-2,10-6 |
| ITF M15 Sharm El Sheikh | 2024/11/10 13:00 | Jan Hrazdil v Natsuki Yamamoto | 6-2,6-1 |
| ITF M15 Yanagawa | 2024/10/28 01:30 | Geun Jun Kim v Natsuki Yamamoto | 7-5,6-2 |
| ITF M15 Tanagura | 2024/10/21 00:30 | Natsuki Yamamoto v Shu Muto | 4-6,6-3,4-10 |
| ITF M15 Tanagura | 2024/10/20 00:30 | Natthayut Nithithananont v Natsuki Yamamoto | 2-6,2-6 |
| ITF M25 Takasaki | 2024/09/15 04:00 | Natsuki Yamamoto v Hien Q H Pham | 3-6,3-6 |
| UTR Pro Noda | 2025/01/07 07:10 | Kotaro Mochizuki v Ryotaro Matsumura | 3-6,1-6 |
| UTR Pro Yokohama | 2024/12/01 01:00 | Ryotaro Matsumura v Henry Ren | 6-2,6-3 |
| UTR Pro Yokohama | 2024/11/30 01:30 | Ryotaro Matsumura v Kosuke Morita | 6-1,6-1 |
| UTR Pro Yokohama | 2024/11/29 01:30 | Rikuto Yamaguchi v Ryotaro Matsumura | 2-6,4-6 |
| UTR Pro Yokohama | 2024/11/27 08:10 | Shinde Yuzuki v Ryotaro Matsumura | 6-4,0-6,6-7 |
| UTR Pro Yokohama | 2024/11/25 04:35 | Andras Necz v Ryotaro Matsumura | 3-6,6-2,3-6 |
| ITF M15 Tanagura | 2024/10/27 02:00 | Woobin Shin v Ryotaro Matsumura | 7-6,6-3 |
| ITF M15 Tanagura | 2024/10/26 01:00 | Ryotaro Matsumura v Issei Okamura | 6-2,6-2 |