| UTR Pro Noda | 2023/10/19 00:00 | Kazuma Kawachi v Yuto Okuchi | 6-4,6-7,6-0 |
| UTR Pro Noda | 2023/10/18 00:00 | Sota Tani v Kazuma Kawachi | 2-6,2-6 |
| UTR Pro Noda | 2023/10/17 01:30 | Chaitanya Irkar v Kazuma Kawachi | 4-6,4-6 |
| ITF - M25 Takasaki | 2023/09/20 06:45 | Kazuma Kawachi v Hikaru Shiraishi | 3-6,3-6 |
| ITF - M25 Sapporo | 2023/09/15 01:00 | Kazuma Kawachi v Hayato Matsuoka | 3-6,6-0,4-6 |
| ITF - M25 Sapporo | 2023/09/12 02:00 | Yusuke Takahashi v Kazuma Kawachi | 6-4,3-6,2-6 |
| ITF - M15 Monastir | 2023/08/23 12:35 | Kazuma Kawachi v Mohammad Alkotop | 3-6,1-6 |
| ITF - M15 Monastir | 2023/08/15 13:05 | Younes Lalami Laaroussi v Kazuma Kawachi | 6-1,6-2 |
| UTR Pro Noda | 2023/10/19 04:20 | Sota Tani v Natsuki Yamamoto | 6-7,6-7 |
| UTR Pro Noda | 2023/10/18 00:00 | Chaitanya Irkar v Natsuki Yamamoto | 2-6,4-5 |
| UTR Pro Noda | 2023/10/16 05:00 | Yuto Okuchi v Natsuki Yamamoto | 2-6,3-6 |
| ITF - M25 Takasaki | 2023/09/18 00:50 | Ryotaro Matsumura v Natsuki Yamamoto | 6-2,6-1 |
| ITF - M25 Takasaki | 2023/09/17 01:00 | Natsuki Yamamoto v Taki Adachi | 6-3,6-3 |
| UTR Pro Miki | 2023/07/01 04:41 | Shinde Yuzuki v Natsuki Yamamoto | 6-1,6-3 |
| UTR Pro Miki | 2023/06/30 00:30 | Natsuki Yamamoto v Kento Tagashira | 6-1,6-2 |
| UTR Pro Miki | 2023/06/29 03:30 | Natsuki Yamamoto v Taiyo Kurata | 6-7,0-6 |