Stadium: Court 4 Round: 25
| ITF India F5 | 2016/09/13 06:05 | Niki Kaliyanda Poonacha v Nitin Kumar Sinha | 6-2,6-2 |
| ITF India F4 | 2018/03/21 03:30 | Boluda-Purkiss, Carlos v Nitin Kumar Sinha | 6-4,6-0 |
| ITF India F4 | 2018/03/20 06:30 | Nitin Kumar Sinha v Poplavskyy, Stanislav | 6-1,7-5 |
| ITF India F3 | 2018/03/11 04:00 | Nitin Kumar Sinha v Kaza, Vinayak Sharma | 3-6,4-6 |
| Challenger - Chennai | 2018/02/12 07:05 | Lucas Catarina v Nitin Kumar Sinha | 6-3,6-4 |
| ITF China F3 | 2018/01/25 05:15 | Nitin Kumar Sinha v Kuan-Yi Lee | 3-6,2-6 |
| ITF China F3 | 2018/01/24 02:30 | Wang, Huixin v Nitin Kumar Sinha | 2-6,3-6 |
| ITF China F3 | 2018/01/23 04:05 | Wang, Ruixuan v Nitin Kumar Sinha | 2-6,4-6 |
| ITF China F3 Qual | 2018/01/22 02:30 | Nitin Kumar Sinha v Sheng Tang | 7-5,4-6,6-2 |
| ITF Vietnam F1 | 2018/04/29 05:30 | Mulada, Tonkla v Niki Kaliyanda Poonacha | 1-6,1-6 |
| ITF Vietnam F1 | 2018/04/28 03:00 | Ha Minh Duc Vu v Niki Kaliyanda Poonacha | 0-6,1-6 |
| ITF India F4 | 2018/03/18 06:30 | Niki Kaliyanda Poonacha v Cheruku, Vasisht | 1-6,2-6 |
| ITF India F4 | 2018/03/17 09:30 | Niki Kaliyanda Poonacha v Rangaraju, Ramakrishnan | 6-2,6-2 |
| ITF India F2 | 2018/03/03 04:00 | Sunish, Dhruv v Niki Kaliyanda Poonacha | 6-2,6-4 |
| ITF India F1 | 2018/02/24 07:00 | Niki Kaliyanda Poonacha v Borthakur, Abhinansu | 3-6,2-6 |
| Sri Lanka F3, Singles Qualifying | 2017/07/04 05:10 | Niki Kaliyanda Poonacha v Chandrasekar, Anirudh | 4-6,6-4,4-6 |
| ITF Sri Lanka F2 | 2017/06/30 09:30 | Petrone, Alessandro v Niki Kaliyanda Poonacha | 7-5,4-6,7-6 |