Round: 44 Ground: Hardcourt outdoor
| ITF Singapore F3 | 2018/05/29 04:50 | Ilija Vucic v Nitin Kumar Sinha | 6-3,6-1 |
| ITF Singapore F3 | 2018/05/27 03:00 | Nitin Kumar Sinha v Tom Evans | 6-4,1-6,7-6 |
| ITF Singapore F2 | 2018/05/20 10:00 | James Frawley v Nitin Kumar Sinha | 6-2,6-2 |
| ITF Vietnam F3 | 2018/05/14 03:00 | Nitin Kumar Sinha v Karunuday Singh | 3-6,2-6 |
| 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 Vietnam F3 | 2018/05/14 03:00 | Quang T Tran v Min-Kyu Song | 1-6,1-6 |