Stadium: Central Round: 26
| ITF M15 - Platja D'Aro | 2021/10/06 10:15 | Giovanni Fonio v Vitali Shvets | 6-4,6-0 |
| Challenger Lissabon | 2021/09/26 14:00 | Daniel Michalski v Giovanni Fonio | 6-4,7-5 |
| Challenger Bukarest | 2021/09/19 07:30 | Giovanni Fonio v Oleksii Krutykh | 3-6,1-6 |
| Challenger Trieste | 2021/07/26 12:35 | Thiago Agustin Tirante v Giovanni Fonio | 6-3,6-3 |
| Challenger Trieste | 2021/07/25 11:35 | Giovanni Fonio v Julian Ocleppo | 3-6,6-4,7-5 |
| ITF M25 - Kottingbrunn | 2021/07/23 10:55 | Giovanni Fonio v Mate Valkusz | 4-6,0-6 |
| ITF M25 - Kottingbrunn | 2021/07/22 08:00 | Giovanni Fonio v Sandro Kopp | 6-1,7-5 |
| ITF M25 - Kottingbrunn | 2021/07/21 10:15 | Giovanni Fonio v Peter Makk | 6-3,7-6 |
| ITF M15 - Platja D'Aro | 2021/10/05 08:25 | Alex Barrena v Manish Sureshkumar | 5-7,4-6 |
| Challenger Murcia | 2021/09/26 10:40 | Manish Sureshkumar v Jonathan Mridha | 6-7,4-6 |
| 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 |