Estadio: Court 4 Round: 26
| 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 de 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 China F3 | 2018/01/23 04:05 | Rui-Xuan Wang v Nitin Kumar Sinha | 2-6,4-6 |
| ITF Vietnam F2 | 2018/05/08 05:25 | Kazuki Nishiwaki v Pruchya Isarow | 6-4,7-5 |
| ITF Vietnam F2 | 2018/05/06 04:00 | Kazuki Nishiwaki v Palaphoom Kovapitukted | 7-6,6-3 |
| ITF Vietnam F1 | 2018/05/04 03:00 | Nam Hoang Ly v Kazuki Nishiwaki | 6-1,6-3 |
| ITF Vietnam F1 | 2018/05/02 03:00 | Kazuki Nishiwaki v Aaron Addison | 7-5,6-7,6-2 |
| ITF Vietnam F1 | 2018/04/30 04:50 | Kazuki Nishiwaki v Minh Tuan Pham | 6-2,6-2 |
| ITF Vietnam F1 | 2018/04/29 05:30 | Kazuki Nishiwaki v Paramveer Singh Bajwa | 6-4,6-3 |
| ITF Japón F6 | 2018/04/14 01:00 | Kazuki Nishiwaki v Hiroyasu Ehara | 2-6,6-7 |
| ITF Japón F6 | 2018/04/13 03:40 | Rimpei Kawakami v Kazuki Nishiwaki | 4-6,2-6 |