| UTR Pro Tennis Series Miki | 2022/12/10 03:57 | Koki Matsuda v Kazuki Nishiwaki | 3-6,0-0 |
| UTR Pro Tennis Series Miki | 2022/12/09 02:00 | Hiiro Sakamoto v Kazuki Nishiwaki | 2-6,2-6 |
| UTR Pro Tennis Series Miki | 2022/12/08 03:30 | Ryohei Takase v Kazuki Nishiwaki | 1-6,1-6 |
| UTR Pro Tennis Series Miki | 2022/12/05 03:30 | Kazuki Nishiwaki v Yudai Watanabe | 0-0 |
| ITF M15 Bhilai | 2022/11/24 07:25 | Vladyslav Orlov v Kazuki Nishiwaki | 6-2,6-2 |
| ITF M15 Bhilai | 2022/11/23 09:15 | Shivank Bhatnagar v Kazuki Nishiwaki | 2-6,2-6 |
| ITF M25 Mumbai | 2022/11/18 06:00 | Dominik Palan v Kazuki Nishiwaki | 6-1,6-2 |
| ITF M25 Mumbai | 2022/11/17 04:25 | Karan Singh v Kazuki Nishiwaki | 6-4,4-6,0-6 |
| UTR Pro Tennis Series Miki | 2022/12/10 02:00 | Ryotaro Taguchi v Sora Fukuda | 3-6,7-6,6-0 |
| Challenger Kobe | 2022/11/13 01:00 | Ryotaro Taguchi v Colin Sinclair | 6-7,6-7 |