Stadium: Sub-Court B Round: 27 Ground: Hardcourt outdoor
| ITF M25 Antalya | 2022/03/10 07:00 | Yuki Mochizuki v Kazuki Nishiwaki | 5-7,6-2,6-3 |
| ITF M25 Sapporo | 2023/09/15 03:20 | Kousuke Ogura v Kazuki Nishiwaki | 4-6,7-5,2-6 |
| ITF M25 Sapporo | 2023/09/13 04:00 | Kazuki Nishiwaki v Taki Adachi | 6-1,6-2 |
| ITF M25 Hong Kong | 2023/09/09 10:00 | Kazuki Nishiwaki v Coleman Wong | 2-6,7-5,8-10 |
| ITF M25 Hong Kong | 2023/09/07 07:00 | Jie Cui v Kazuki Nishiwaki | 5-7,4-6 |
| ITF M25 Hong Kong | 2023/09/06 02:00 | Collin Altamirano v Kazuki Nishiwaki | 3-6,5-7 |
| ITF M25 Tainan | 2023/08/26 02:00 | Kazuki Nishiwaki v Rishab Agarwal | 5-7,3-6 |
| ITF M25 Tainan | 2023/08/25 02:00 | Kazuki Nishiwaki v Yamato Sueoka | 6-2,6-3 |
| ITF M25 Tainan | 2023/08/24 05:20 | Henrik Wiersholm v Kazuki Nishiwaki | 3-6,6-3,1-6 |
| ITF M25 Sapporo | 2023/09/15 02:55 | Tomohiro Masabayashi v Yuki Mochizuki | 6-2,4-6,1-6 |
| ITF M25 Sapporo | 2023/09/13 03:05 | Collin Altamirano v Yuki Mochizuki | 6-7,4-6 |
| Challenger Cary | 2023/08/08 22:15 | Tung-Lin Wu v Yuki Mochizuki | 4-6,6-3,6-2 |
| Challenger Cary | 2023/08/07 16:00 | Stefan Dostanic v Yuki Mochizuki | 3-6,6-3,6-1 |
| Challenger Cary | 2023/08/06 16:55 | Evan King v Yuki Mochizuki | 6-7,5-7 |
| Challenger Lexington | 2023/08/01 20:20 | Cannon Kingsley v Yuki Mochizuki | 6-4,4-6,6-3 |
| Challenger Lexington | 2023/07/31 15:40 | Yuki Mochizuki v Makoto Ochi | 6-4,6-2 |
| Challenger Lexington | 2023/07/30 17:40 | Yuki Mochizuki v Andre Ilagan | 6-4,7-6 |