Stadium: Court 4 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2021/02/14 16:00 | Karlo Cubelic v Nitin Kumar Sinha | 6-4,6-3 |
| ITF M15 Sharm El Sheikh | 2021/02/07 14:30 | Daisuke Sumizawa v Nitin Kumar Sinha | 6-3,7-6 |
| ITF M15 Sharm El Sheikh | 2021/02/02 10:50 | Daisuke Sumizawa v Nitin Kumar Sinha | 6-3,6-3 |
| ITF M15 Sharm El Sheikh | 2021/02/01 08:00 | Nitin Kumar Sinha v Bastien Presuhn | 6-1,7-5 |
| ITF M15 Sharm El Sheikh | 2021/01/31 09:00 | Anirudh Chandrasekar v Nitin Kumar Sinha | 3-6,4-6 |
| ITF M15 Kolkata | 2020/03/12 04:00 | Niklas Schell v Nitin Kumar Sinha | 6-3,3-6,0-6 |
| ITF M25 Nonthaburi | 2020/02/03 04:55 | Nitin Kumar Sinha v Austin Rapp | 1-6,6-3,8-10 |
| ITF M25 Nonthaburi | 2020/02/02 09:45 | Nitin Kumar Sinha v Shisanuphong Pokinsagethasiri | 6-3,2-6,13-11 |