Stadium: 11 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Yanagawa | 2023/12/20 03:00 | Kazuma Kawachi v Yuto Oki | 6-2,6-4 |
| ITF M15 Yanagawa | 2023/12/26 03:00 | Yuto Oki v Yuta Kawahashi | 1-6,6-4,0-6 |
| ITF M15 Yanagawa | 2023/12/20 03:00 | Kazuma Kawachi v Yuto Oki | 6-2,6-4 |
| ITF M15 Yanagawa | 2023/12/18 03:00 | Yuto Oki v Changli Zhang | 4-6,6-0,10-8 |
| Challenger Matsuyama | 2023/11/05 03:35 | Naoki Nakagawa v Yuto Oki | 6-4,6-2 |
| UTR Pro Miki | 2023/04/16 02:00 | Shinde Yuzuki v Yuto Oki | 4-6,6-0,5-7 |
| UTR Pro Miki | 2023/04/15 08:48 | Wakamatsu Taichi v Yuto Oki | 6-4,3-6,6-6 |
| UTR Pro Miki | 2023/04/14 02:00 | Ren Nakamura v Yuto Oki | 6-3,6-0 |
| UTR Pro Miki | 2023/04/13 00:30 | Yudai Umeoka v Yuto Oki | 2-6,0-6 |
| 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 |
| UTR Pro Kawaguchi | 2024/08/15 01:43 | Kazuma Kawachi v Ryotaro Matsumura | 5-7,6-7 |