| UTR Pro Miki | 2023/04/14 02:00 | Ren Nakamura v Yuto Oki | 6-3,6-0 |
| UTR Pro Miki | 2023/04/13 03:30 | Ren Nakamura v Ryotaro Taguchi | 6-4,6-7,3-6 |
| UTR Pro Miki | 2023/04/12 06:23 | Yudai Umeoka v Ren Nakamura | 3-6,1-6 |
| UTR Pro Miki | 2023/04/11 05:00 | Brody Nejedly v Ren Nakamura | 1-6,2-6 |
| ITF M25 Montreal | 2023/03/13 13:55 | Jesse Flores v Ren Nakamura | 6-2,6-1 |
| ITF M25 Montreal | 2023/03/07 17:10 | Drew Van Orderlain v Ren Nakamura | 7-6,7-5 |
| ITF M25 Montreal | 2023/03/06 19:30 | Ren Nakamura v Sid Donarski | 7-6,6-1 |
| UTR Pro Miki | 2023/02/10 04:30 | Ren Nakamura v Seita Watanabe | 5-7,2-6 |
| UTR Pro Miki | 2023/04/14 03:30 | Natsuki Yamamoto v Henrik Heise Korsgaard | 1-6,4-5 |
| UTR Pro Miki | 2023/04/12 05:14 | Natsuki Yamamoto v Kazuma Kimura | 7-5,6-2 |
| UTR Pro Miki | 2023/04/11 02:00 | Natsuki Yamamoto v Bang Shuo Yin | 6-7,6-3,6-3 |
| UTR Pro Miki | 2023/02/11 02:00 | Tomohiro Masabayashi v Natsuki Yamamoto | 6-0,6-3 |
| UTR Pro Miki | 2023/02/10 02:00 | Natsuki Yamamoto v So Ogiri | 7-5,7-5 |
| UTR Pro Miki | 2023/02/08 00:30 | Natsuki Yamamoto v Lennon Jones | 2-6,4-6 |
| UTR Pro Miki | 2023/02/07 05:30 | Natsuki Yamamoto v Ryuki Matsuda | 7-5,7-6 |
| UTR Pro Miki | 2023/02/06 03:30 | Yuki Karatsu v Natsuki Yamamoto | 2-6,4-6 |