Stadium: Grand Stand Round: 27 Ground: Clay
| Challenger - Gran Canaria | 2021/03/03 13:00 | Alessandro Giannessi v Nikolas Sanchez Izquierdo | 7-6,7-5 |
| Challenger - Gran Canaria | 2021/03/02 13:05 | Alessandro Giannessi v Emilio Nava | 6-2,6-3 |
| Challenger - Gran Canaria | 2021/02/24 12:00 | Steven Diez v Alessandro Giannessi | 7-6,7-6 |
| Challenger - Gran Canaria | 2021/02/23 11:00 | Stefano Napolitano v Alessandro Giannessi | 0-6,2-6 |
| Challenger - Biella | 2021/02/16 14:10 | Alessandro Giannessi v Thomas Fabbiano | 1-6,4-6 |
| Challenger - Antalya | 2021/02/05 08:00 | Alessandro Giannessi v Alejandro Tabilo | 5-7,7-5,6-1 |
| Challenger - Antalya | 2021/02/03 08:00 | Alessandro Giannessi v Mohamed Safwat | 6-3,6-4 |
| Challenger - Antalya | 2021/02/02 07:30 | Daniel Altmaier v Alessandro Giannessi | 6-7,2-6 |
| Challenger - Gran Canaria | 2021/03/03 16:00 | Carlos Gimeno Valero v Federico Gaio | 6-0,3-6,6-3 |
| Challenger - Gran Canaria | 2021/02/22 14:30 | Carlos Gimeno Valero v Marco Trungelliti | 6-1,6-7,3-6 |
| Challenger - Biella | 2021/02/08 09:00 | Carlos Gimeno Valero v Jelle Sels | 0-6,6-7 |
| Challenger - Biella | 2021/02/07 09:30 | Duje Ajdukovic v Carlos Gimeno Valero | 6-3,6-7,4-6 |
| ITF - M25 Villena | 2021/02/03 09:35 | Holger Rune v Carlos Gimeno Valero | 3-6,6-2,6-1 |
| ITF - M15 Antalya | 2021/01/21 10:55 | Pedro Cachin v Carlos Gimeno Valero | 6-3,4-6,6-2 |
| ITF - M15 Antalya | 2021/01/19 12:55 | Carlos Gimeno Valero v Ilya Snitari | 6-2,6-2 |
| Challenger - Marbella | 2020/10/30 10:00 | Carlos Gimeno Valero v Alexandre Muller | 4-6,0-6 |