Stadium: Court 3 Round: 28 Ground: Hardcourt outdoor
| ITF M15 New Delhi | 2021/03/28 10:30 | Dalwinder Singh v Suraj R Prabodh | 4-6,3-6 |
| ITF M15 New Delhi | 2021/03/28 05:00 | Dalwinder Singh v Bharath Nishok Kumaran | 6-3,6-4 |
| ITF M15 Indore | 2021/03/11 04:00 | Dalwinder Singh v Luca Castelnuovo | 4-6,3-6 |
| ITF M15 Indore | 2021/03/09 04:00 | Raghav Jaisinghani v Dalwinder Singh | 3-6,0-6 |
| ITF M15 Lucknow | 2021/03/04 04:00 | Dalwinder Singh v Sidharth Rawat | 6-7,5-7 |
| ITF M15 Lucknow | 2021/03/03 04:00 | Dalwinder Singh v Vinayak Sharma Kaza | 7-6,6-3 |
| ITF M15 Lucknow | 2021/03/01 04:00 | Dalwinder Singh v Jonathan Binding | 2-6,6-4,10-7 |
| ITF M15 Lucknow | 2021/02/28 07:50 | Dalwinder Singh v Vishnu Vardhan | 6-2,6-7,10-5 |
| ITF M25 Madrid | 2021/09/14 07:00 | Manish Sureshkumar v Mario G Fernandez | 6-4,6-3 |
| ITF M25 Madrid | 2021/09/13 09:00 | Manish Sureshkumar v Chanon Phunsawat | 6-4,7-5 |
| ITF M15 Allershausen | 2021/09/03 10:00 | Manish Sureshkumar v Mick Veldheer | 1-6,6-4,0-6 |
| ITF M15 Allershausen | 2021/09/02 09:00 | Manish Sureshkumar v Matthew Romios | 6-1,5-7,6-3 |
| ITF M15 Allershausen | 2021/09/01 09:00 | Manish Sureshkumar v Adrian Oetzbach | 3-6,6-4,6-4 |
| ITF M25 Trier | 2021/08/24 09:55 | Manish Sureshkumar v Marlon Vankan | 6-7,1-6 |
| ITF M15 New Delhi | 2021/04/01 06:10 | Manish Sureshkumar v Zsombor Velcz | 3-6,2-6 |
| ITF M15 New Delhi | 2021/03/31 07:50 | Manish Sureshkumar v Preston Brown | 6-3,6-3 |