Stadium: Court 4 Round: 25
| ITF India F5 | 2015/05/18 04:45 | Nitin Kumar Sinha v Karunuday Singh | 3-6,4-6 |
| ITF Vietnam F2 | 2018/05/09 03:00 | Nitin Kumar Sinha v Kazuki Nishiwaki | 4-6,1-6 |
| ITF Vietnam F1 | 2018/04/30 03:00 | Nitin Kumar Sinha v Niki Kaliyanda Poonacha | 4-6,5-7 |
| ITF India F4 | 2018/03/21 03:30 | Carlos Boluda-Purkiss v Nitin Kumar Sinha | 6-4,6-0 |
| ITF India F4 | 2018/03/20 06:30 | Nitin Kumar Sinha v Stanislav Poplavskyy | 6-1,7-5 |
| ITF India F3 | 2018/03/11 04:00 | Nitin Kumar Sinha v Vinayak Sharma Kaza | 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 | Huixin Wang v Nitin Kumar Sinha | 2-6,3-6 |
| ITF Vietnam F2 | 2018/05/07 05:45 | Ji Sung Nam v Karunuday Singh | 6-4,6-3 |
| ITF Nigeria F1 | 2018/04/18 10:30 | Karunuday Singh v Jelle Sels | 4-6,4-6 |
| ITF Nigeria F1 | 2018/04/16 09:00 | Jakub Paul v Karunuday Singh | 4-6,3-6 |
| ITF India F4 | 2018/03/20 05:00 | Karunuday Singh v Manish Sureshkumar | 4-6,2-6 |
| ITF India F3 | 2018/03/15 04:00 | Karunuday Singh v Nam Hoang Ly | 1-6,1-6 |
| ITF India F3 | 2018/03/14 05:55 | Karunuday Singh v Vijayant Malik | 6-2,6-1 |
| ITF India F2 | 2018/03/09 04:30 | Carlos Boluda-Purkiss v Karunuday Singh | 7-6,6-4 |
| ITF India F2 | 2018/03/08 05:25 | Karunuday Singh v Suraj R Prabodh | 6-3,3-6,6-3 |