Stadium: Court 4 Round: 14 Ground: Hardcourt outdoor
| ITF M25 Indore | 2022/11/09 05:30 | Kazuki Nishiwaki v Nitin Kumar Sinha | 6-4,6-3 |
| ITF M15 Anning | 2019/01/11 04:40 | Kazuki Nishiwaki v Nitin Kumar Sinha | 6-7,6-2,6-4 |
| ITF Vietnam F2 | 2018/05/09 03:00 | Nitin Kumar Sinha v Kazuki Nishiwaki | 4-6,1-6 |
| ITF M15 Tokyo | 2024/07/11 02:00 | Kazuki Nishiwaki v Taiyo Yamanaka | 3-6,3-6 |
| ITF M15 Tokyo | 2024/07/10 07:15 | Kazuki Nishiwaki v Reiya Komagata | 6-3,6-1 |
| ITF M15 Hong Kong | 2024/06/20 02:00 | Tomohiro Masabayashi v Kazuki Nishiwaki | 7-5,6-1 |
| ITF M15 Hong Kong | 2024/06/19 02:00 | Rohan Mehra v Kazuki Nishiwaki | 7-6,3-6,4-6 |
| ITF M15 Hong Kong | 2024/06/11 06:05 | Tsz Fu Wong v Kazuki Nishiwaki | 2-6,4-6 |
| ITF M15 Daegu | 2024/06/05 04:00 | Ku Keon Kang v Kazuki Nishiwaki | 7-6,6-2 |
| ITF M15 Karuizawa | 2024/05/30 03:20 | Ryotaro Matsumura v Kazuki Nishiwaki | 6-4,6-2 |
| ITF M15 Karuizawa | 2024/05/29 02:30 | Jay Lin Gibson v Kazuki Nishiwaki | 2-6,6-4,7-10 |
| ITF M15 Ust-Kamenogorsk | 2024/06/26 09:45 | Cengiz Aksu v Nitin Kumar Sinha | 6-3,6-1 |
| ITF M25 Luzhou | 2024/06/19 07:25 | Zhenxiong Dong v Nitin Kumar Sinha | 6-3,7-5 |
| ITF M25 Addis Ababa | 2024/05/22 10:50 | Karan Singh v Nitin Kumar Sinha | 6-3,6-3 |
| ITF M15 Chandigarh | 2024/03/21 06:05 | Nitin Kumar Sinha v Nam Hoang Ly | 2-6,3-6 |
| ITF M15 Chandigarh | 2024/03/20 07:00 | Siddhant Banthia v Nitin Kumar Sinha | 4-6,3-6 |
| ITF M25 New Delhi | 2024/03/13 10:20 | Siddharth Vishwakarma v Nitin Kumar Sinha | 6-1,6-4 |
| ITF M15 Nakhon Si Thammarat | 2024/02/21 02:00 | Nitin Kumar Sinha v Mitsuki Wei Kang Leong | 6-7,2-6 |
| ITF M15 Nakhon Si Thammarat | 2024/02/19 02:00 | Yeongseok Jeong v Nitin Kumar Sinha | 6-7,6-7 |