| UTR Pro Miki | 2023/02/06 03:30 | Yuki Karatsu v Natsuki Yamamoto | 2-6,4-6 |
| UTR Pro Kawaguchi | 2024/03/06 23:30 | Yusuke Yoshikawa v Natsuki Yamamoto | 6-1,6-2 |
| UTR Pro Kawaguchi | 2024/03/04 06:31 | Taisei Miyamoto v Natsuki Yamamoto | 6-4,7-6 |
| UTR Pro Kawaguchi | 2024/03/03 00:30 | Natsuki Yamamoto v Naoto Tomizawa | 6-3,6-3 |
| ITF M15 Monastir | 2024/01/07 08:00 | Natsuki Yamamoto v Nazim Makhlouf | 5-7,4-6 |
| ITF M15 Monastir | 2024/01/01 13:00 | Maxence Bertimon v Natsuki Yamamoto | 6-1,6-1 |
| ITF M15 Monastir | 2024/01/01 09:00 | Natsuki Yamamoto v Luca Matteo Sobbe | 6-3,3-6,10-8 |
| ITF M15 Monastir | 2023/12/31 08:00 | Christoph Gayk v Natsuki Yamamoto | 4-6,2-6 |
| ITF M15 Monastir | 2023/12/25 09:00 | Anas Bennour Dit Sahli v Natsuki Yamamoto | 6-2,7-6 |
| UTR Pro Kawaguchi | 2024/03/04 07:43 | Yusuke Yoshikawa v Yuki Karatsu | 6-4,6-2 |
| UTR Pro Kawaguchi | 2024/03/04 01:30 | Yuki Karatsu v Oliver Welch | 6-3,6-4 |
| UTR Pro Kawaguchi | 2024/03/03 04:34 | Ryoto Tachi v Yuki Karatsu | 6-0,7-6 |
| UTR Pro Kawaguchi | 2024/03/02 01:00 | Sota Tani v Yuki Karatsu | 2-6,1-6 |
| UTR Pro Miki | 2023/02/11 02:00 | Yuji Arimura v Yuki Karatsu | 6-3,7-6 |
| UTR Pro Miki | 2023/02/09 05:00 | Yuki Karatsu v Lennon Jones | 0-6,0-6 |
| UTR Pro Miki | 2023/02/08 00:30 | Yuki Karatsu v Ryuki Matsuda | 2-6,2-6 |
| UTR Pro Miki | 2023/02/07 03:30 | Yuki Karatsu v So Ogiri | 6-3,4-6,3-6 |