Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Gurugram | 2021/11/27 04:30 | Dusty H. Boyer v Nitin Kumar Sinha | 4-6,6-3,6-4 |
| ITF M15 Gurugram | 2021/11/26 04:30 | Nitin Kumar Sinha v Nicolas Tepmahc | 3-6,6-4,6-2 |
| ITF M15 Gurugram | 2021/11/25 04:00 | S D Prajwal Dev v Nitin Kumar Sinha | 4-6,6-3,6-7 |
| ITF M15 Gurugram | 2021/11/24 03:30 | Nitin Kumar Sinha v Bharath Nishok Kumaran | 4-6,6-3,6-4 |
| ITF M15 New Delhi | 2021/11/19 06:10 | Nitin Kumar Sinha v Vishnu Vardhan | 6-7,6-2,5-7 |
| ITF M15 New Delhi | 2021/11/18 05:50 | Eric Vanshelboim v Nitin Kumar Sinha | 6-3,6-7,0-6 |
| ITF M15 New Delhi | 2021/11/17 07:10 | Alexis Canter v Nitin Kumar Sinha | 6-4,2-6,6-7 |
| ITF M15 Indore | 2021/11/11 05:50 | Nitin Kumar Sinha v S D Prajwal Dev | 3-6,6-7 |
| ITF M25 Pretoria | 2021/09/29 13:05 | Takuto Niki v Dylan Salton | 2-6,6-7 |
| ITF M25 Johannesburg | 2021/09/21 10:15 | Takuto Niki v Mateus Alves | 3-6,4-6 |
| ITF M25 Johannesburg | 2021/09/15 08:00 | Takuto Niki v Jeremy Beale | 0-6,4-6 |
| ITF M15 Monastir | 2021/09/09 08:00 | Takuto Niki v Masamichi Imamura | 2-6,3-6 |
| ITF M15 Monastir | 2021/09/08 08:00 | Takuto Niki v Lucca Pinto | 6-2,6-2 |
| ITF M15 Monastir | 2021/09/01 09:30 | Takuto Niki v Guy Orly Iradukunda | 6-2,2-6,3-6 |
| ITF M15 Castelo Branco | 2021/07/28 17:20 | Takuto Niki v Luca Giacomini | 4-6,5-7 |
| ITF M25 Idanha-A-Nova | 2021/07/21 12:05 | Takuto Niki v Nicolas Moreno De Alboran | 3-6,2-6 |