Stadium: Court 7 Round: 26 Ground: Clay
| ITF M15 Cairo | 2021/09/08 10:05 | Rishab Agarwal v Nitin Kumar Sinha | 6-7,6-0,4-6 |
| ITF M15 Cairo | 2021/09/01 09:50 | Valerio Aboian v Nitin Kumar Sinha | 6-4,6-1 |
| ITF M15 New Delhi | 2021/04/01 06:00 | Aidan Mchugh v Nitin Kumar Sinha | 5-7,7-6,7-6 |
| ITF M15 New Delhi | 2021/03/31 04:00 | Nitin Kumar Sinha v Abhinav Sanjeev Shanmugam | 6-2,6-0 |
| ITF M15 New Delhi | 2021/03/30 04:00 | Nitin Kumar Sinha v Henry Patten | 1-6,4-6 |
| ITF M15 New Delhi | 2021/03/28 14:00 | Nitin Kumar Sinha v Digvijay Pratap Singh | 4-6,6-3,10-7 |
| ITF M15 Pune | 2021/03/21 09:15 | Nitin Kumar Sinha v Ishaque Eqbal | 6-7,6-7 |
| ITF M15 Indore | 2021/03/09 04:00 | Nitin Kumar Sinha v Oliver Crawford | 6-4,2-6,1-6 |
| ITF M15 Cairo | 2021/09/08 09:10 | Kokoro Isomura v Santiago De La Fuente | 1-6,2-6 |
| ITF M15 Antalya | 2021/06/14 11:35 | Stefano Battaglino v Santiago De La Fuente | 6-1,6-3 |
| ITF M15 Antalya | 2021/06/13 07:30 | Marco Furlanetto v Santiago De La Fuente | 2-6,7-5,7-10 |
| ITF M15 Antalya | 2021/06/06 07:30 | Pawel Juszczak v Santiago De La Fuente | 6-4,7-5 |
| ITF M15 Antalya | 2021/06/02 09:20 | Daisuke Sumizawa v Santiago De La Fuente | 5-7,7-5,7-5 |
| ITF M15 Antalya | 2021/06/01 07:00 | Buvaysar Gadamauri v Santiago De La Fuente | 4-6,3-6 |
| ITF M15 Antalya | 2021/05/31 10:30 | Santiago De La Fuente v Fletcher Scott | 6-3,6-1 |
| ITF M15 Antalya | 2021/05/24 07:00 | Santiago De La Fuente v Danylo Veremeychuk | 3-6,6-2,7-10 |