Stadium: KPI Park - Court 03 Ground: Hardcourt outdoor
Referee:
| UTR Pro Noda | 2023/10/20 00:00 | Kazuma Kawachi v Natsuki Yamamoto | 6-4,6-1 |
| UTR Pro Yokohama | 2025/02/03 06:05 | Gengo Kikuchi v Natsuki Yamamoto | 3-6,6-2,6-3 |
| UTR Pro Yokohama | 2025/02/01 08:10 | Toshiki Karigyo v Natsuki Yamamoto | 2-6,6-3,3-6 |
| UTR Pro Yokohama | 2025/01/31 23:45 | Mao Takada v Natsuki Yamamoto | 1-6,6-2,3-6 |
| UTR Pro Yokohama | 2025/01/31 02:35 | Natsuki Yamamoto v Daiki Sato | 6-2,6-7,6-2 |
| UTR Pro Yokohama | 2025/01/30 04:20 | Natsuki Yamamoto v Kazuki Sugimoto | 5-7,2-6 |
| UTR Pro Yokohama | 2025/01/29 01:00 | Jumpei Yamasaki v Natsuki Yamamoto | 6-4,7-5 |
| UTR Pro Yokohama | 2025/01/28 03:00 | Issei Okamura v Natsuki Yamamoto | 3-6,3-6 |
| UTR Pro Noda | 2025/01/12 00:00 | Natsuki Yamamoto v Yusuke Yoshikawa | 6-3,6-0 |
| ITF M15 Tanagura | 2024/10/22 00:25 | Yuto Oki v Kazuma Kawachi | 6-1,6-4 |
| Challenger Guangzhou | 2024/09/08 02:00 | Kris Van Wyk v Kazuma Kawachi | 6-4,6-0 |
| ITF M15 Tashkent | 2024/09/05 05:00 | Kazuma Kawachi v Zura Tkemaladze | 5-7,2-6 |
| ITF M15 Tashkent | 2024/09/04 07:05 | Kazuma Kawachi v Valentin Kopeikin | 6-3,7-5 |
| ITF M15 Tashkent | 2024/08/30 07:15 | Kazuma Kawachi v Dominik Palan | 2-6,0-6 |
| ITF M15 Tashkent | 2024/08/29 07:25 | Daniel Khazime v Kazuma Kawachi | 4-6,5-7 |
| ITF M15 Tashkent | 2024/08/27 11:00 | Kazuma Kawachi v Daniil Golubev | 6-0,6-3 |
| UTR Pro Kawaguchi | 2024/08/17 01:30 | Kazuki Sugimoto v Kazuma Kawachi | 6-4,4-6,6-4 |