Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| 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 M25 Indore | 2022/11/08 06:00 | Kazuki Nishiwaki v Woobin Shin | 7-5,6-2 |
| ITF M25 Indore | 2022/11/07 10:30 | Kazuki Nishiwaki v Mahadevan, Arjun | 6-3,6-0 |
| ITF M25 Jakarta | 2022/11/03 02:00 | Park, Uisung v Kazuki Nishiwaki | 6-1,6-3 |
| ITF M25 Jakarta | 2022/11/01 02:00 | Tegar A S Wibowo v Kazuki Nishiwaki | 1-6,1-6 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2022/09/07 00:30 | Kazuki Nishiwaki v Keisuke Saitoh | 3-6,2-6 |
| ITF M15 Daegu | 2022/09/01 03:50 | Kazuki Nishiwaki v Kim, Cheong-Eui | 0-6,0-6 |
| ITF M15 Daegu | 2022/08/31 05:40 | Kazuki Nishiwaki v Suk Ann | 6-3,6-1 |
| ITF M15 Changwon | 2022/08/26 01:00 | Kazuki Nishiwaki v Jeamoon Lee | 3-6,3-6 |
| ITF M15 New Delhi | 2022/11/04 04:30 | Nitin Kumar Sinha v Florent Bax | 3-6,0-6 |
| ITF M15 New Delhi | 2022/11/03 04:00 | Nitin Kumar Sinha v Vishnu Vardhan | 7-5,6-2 |
| ITF M15 New Delhi | 2022/11/02 03:30 | Nitin Kumar Sinha v Sarthak Suden | 6-1,6-0 |
| ITF M25 Tay Ninh | 2022/10/06 02:00 | Wishaya Trongcharoenchaikul v Nitin Kumar Sinha | 6-3,7-5 |
| ITF M25 Tay Ninh | 2022/10/04 02:00 | Congsup Congcar v Nitin Kumar Sinha | 6-7,1-6 |
| ITF M25 Tay Ninh | 2022/09/29 02:00 | Nitin Kumar Sinha v Yu Hsiou Hsu | 4-6,4-6 |
| ITF M25 Tay Ninh | 2022/09/28 05:15 | Darrshan Suresh v Nitin Kumar Sinha | 4-6,6-4,2-6 |
| ITF M25 Cairo | 2022/09/08 11:00 | Nitin Kumar Sinha v Vidal Azorin, Jose Fco | 1-6,0-6 |