| ITF Sri Lanka F3 | 07/05 03:30 | 26 | Nitin Kumar Sinha v Yurii Dzhavakian | 5-7,3-6 | |
| ITF Sri Lanka F3 | 07/04 07:50 | 25 | Nitin Kumar Sinha v Ankit Chopra | 6-3,6-4 | |
| ITF Sri Lanka F2 | 06/26 03:30 | 54 | Nino Portales v Nitin Kumar Sinha | 7-5,2-6,7-6 | |
| ITF Tailandia F1 | 06/17 09:00 | 44 | Nitin Kumar Sinha v Natthasith Kunsuwan | 4-6,5-7 | |
| ITF Tailandia F2 | 06/11 05:00 | 44 | Calum Puttergill v Nitin Kumar Sinha | 6-2,6-3 | |
| ITF Tailandia F2 | 06/10 06:30 | 44 | Kento Tagashira v Nitin Kumar Sinha | 3-6,0-6 | |
| ITF India F5 | 09/13 06:05 | 25 | Niki Kaliyanda Poonacha v Nitin Kumar Sinha | 6-2,6-2 | |
| ITF India F5 | 09/11 03:30 | 54 | Nitin Kumar Sinha v Pedro Scocuglia | 6-7,6-0,6-2 | |
| ITF India F5 | 09/10 03:30 | 54 | Nitin Kumar Sinha v Tejas Chaukulkar | 4-6,6-4,6-3 | |
| ITF India F4 | 09/07 04:30 | 26 | N.V.S. Prashanth v Nitin Kumar Sinha | 6-3,6-3 | |
| ITF India F4 | 09/05 05:30 | 25 | Rishab Agarwal v Nitin Kumar Sinha | 2-6,7-5,5-7 | |
| ITF India F4 | 09/14 06:15 | 25 | Nitin Kumar Sinha v Isa Mammetgulyyev | 0-6,1-6 | |
| ITF India F4 | 09/13 03:30 | 54 | Jatin Dahiya v Nitin Kumar Sinha | 6-2,3-6,4-6 | |
| ITF India F4 | 09/12 06:00 | 54 | Gokul Suresh v Nitin Kumar Sinha | 2-6,4-6 | |
| ITF India F4 | 08/29 03:30 | 54 | Zach Itzstein v Nitin Kumar Sinha | 3-6,6-3,6-2 | |
| ITF India F4 | 08/26 05:50 | 26 | Nitin Kumar Sinha v N.Sriram Balaji | 3-6,4-6 | |
| ITF India F4 | 08/24 05:15 | 25 | Tejas Chaukulkar v Nitin Kumar Sinha | 3-6,4-6 | |
| ITF India F4 | 08/23 06:30 | 54 | Taha Kapadia v Nitin Kumar Sinha | 4-6,0-6 | |
| ITF India F8 | 06/28 09:30 | - | Nitin Kumar Sinha v Rana-Roop Singh Bhullar | 4-6,2-6 | |
| ITF India F9 | 06/23 07:00 | - | Aryan Goveas v Nitin Kumar Sinha | 6-4,3-6,6-3 | |
| ITF India F9 | 06/22 06:15 | - | Jatin Dahiya v Nitin Kumar Sinha | 5-7,3-6 | |
| ITF India F9 | 06/21 07:00 | - | Sai Saran Reddy Byreddy v Nitin Kumar Sinha | 1-6,2-6 | |
| ITF India F8 | 06/14 03:30 | - | Lucas Bouquet v Nitin Kumar Sinha | 7-5,6-2 | |
| ITF India F8 | 06/13 03:30 | - | Tarun Anirudh Chilakalapudi v Nitin Kumar Sinha | 0-6,4-6 | |
| ITF India F7 | 06/03 04:30 | - | Chandril Sood v Nitin Kumar Sinha | 7-5,6-0 | |
| ITF India F6 | 05/25 08:00 | - | Nitin Kumar Sinha v Mukund Sasikumar | 0-6,3-6 | |
| ITF India F6 | 05/24 05:00 | - | Abhinav Sanjeev Shanmugam v Nitin Kumar Sinha | 3-6,3-6 | |
| ITF India F5 | 05/18 04:45 | - | Nitin Kumar Sinha v Karunuday Singh | 3-6,4-6 | |
| ITF India F6 | 10/28 09:05 | - | Chandril Sood v Nitin Kumar Sinha | 6-3,7-5 |