| ITF M15 Gwalior | 12/04 05:00 | - | Manish Sureshkumar v Nitin Kumar Sinha | 2-6,4-6 | |
| ITF M15 Gwalior | 12/03 03:30 | - | Shanker Heisnam v Nitin Kumar Sinha | 3-6,3-6 | |
| ITF M25 Bhopal | 11/30 04:15 | - | Nitin Kumar Sinha v Digvijay Pratap Singh | 4-6,6-7 | |
| ITF M25 Bhopal | 11/29 04:00 | - |
[253] Sungul Sneschinsk
v
Nitin Kumar Sinha [264] |
6-4,2-6,4-5 | |
| ITF M25 Bhopal | 11/28 04:00 | - | [457] Grigoriy Lomakin v Nitin Kumar Sinha [264] | 6-7,1-6 | |
| ITF M25 Bhopal | 11/27 04:00 | - | Arjun Rathi v Nitin Kumar Sinha | 6-4,1-6,3-6 | |
| ITF M15 Bhubaneswar | 11/19 05:00 | - | Abhinav S Shanmugam v Nitin Kumar Sinha | 6-1,3-6,6-4 | |
| UTR Pro Match Series | 11/15 04:30 | 29 | Nitin Kumar Sinha v Vadym Konovchuk | 3-6,4-6 | |
| UTR Pro Match Series | 11/14 04:55 | 28 | Nitin Kumar Sinha v Ajay Malik | 6-3,6-4 | |
| UTR Pro Match Series | 11/13 03:30 | - | Nitin Kumar Sinha v Bikramjeet S Chawla | 0-6,6-3,6-3 | |
| UTR Pro Match Series | 11/12 05:15 | - | Nitin Kumar Sinha v Abhishek Bastola | 6-2,6-1 | |
| UTR Pro Match Series | 11/11 03:30 | - | Parth Aggarwal v Nitin Kumar Sinha | 0-6,6-3,5-7 | |
| UTR Pro Match Series | 11/10 04:40 | - | Raghav Jaisinghani v Nitin Kumar Sinha | 3-6,6-7 | |
| Challenger Taipei | 11/02 08:30 | 14 | [264] Nitin Kumar Sinha v Shinji Hazawa [417] | 2-6,2-6 | |
| ITF M25 Qian Daohu | 10/29 04:02 | - | Nitin Kumar Sinha v Jason Moloney | 2-6,2-6 | |
| Challenger Suzhou | 10/20 02:00 | 14 | [299] Nitin Kumar Sinha v Egor Agafonov [492] | 5-7,2-6 | |
| ITF M25 Bali | 09/10 07:30 | - |
HC Štart Nové Zámky
v
Nitin Kumar Sinha |
6-0,6-2 | |
| ITF M25 Bali | 09/08 02:00 | - | Nitin Kumar Sinha v Stefan Storch | 7-6,6-4 | |
| ITF M25 Bali | 09/03 02:00 | - | Yanki Erel v Nitin Kumar Sinha | 6-1,5-1 | |
| Challenger Sofia | 08/10 12:10 | 14 | [473] Dali Blanch v Nitin Kumar Sinha [318] | 6-4,7-5 | |
| Challenger Liberec | 07/27 14:05 | 14 | [371] Milos Karol v Nitin Kumar Sinha [330] | 6-1,6-2 | |
| ITF M25 Denia | 07/22 08:00 | - | Nitin Kumar Sinha v Lee Markham | 2-6,7-5,1-0 | |
| ITF M25 Gandia | 07/15 09:41 | - | Nitin Kumar Sinha v Ignacio Parisca | 6-7,5-7 | |
| ITF M25 Bastia-Lucciana | 07/09 10:32 | - | [400] Tristan Lamasine v Nitin Kumar Sinha [389] | 6-3,6-1 | |
| ITF M15 Monastir | 06/25 10:00 | - | Nitin Kumar Sinha v Cooper Williams | 6-3,2-6,1-6 | |
| ITF M15 Monastir | 06/18 12:51 | - | Marcus Walters v Nitin Kumar Sinha | 6-4,5-2 | |
| ITF M15 Tashkent | 05/28 10:30 | - | Nitin Kumar Sinha v Maxim Shin | 6-1,6-7,6-7 | |
| ITF M15 Tashkent | 05/21 10:30 | - | Maxim Zhukov v Nitin Kumar Sinha | 6-2,6-2 | |
| ITF M15 Tehran | 05/14 11:57 | - | Nitin Kumar Sinha v Artur Kukasian | 5-7,4-6 | |
| ITF M25 Bengaluru | 04/02 11:01 | - | Aryan Shah v Nitin Kumar Sinha | 6-2,3-6,6-3 |
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