Stadium: Court 2 Round: 44 Ground: Hardcourt outdoor
| ITF M25 Idanha-A-Nova | 2021/07/18 13:00 | Diego F Flores v Michel-Alexandre Fortin | 6-1,6-0 |
| ITF M25 Idanha-A-Nova | 2021/07/15 08:00 | Nicolas Moreno De Alboran v Diego F Flores | 6-7,6-4,6-4 |
| ITF M25 Idanha-A-Nova | 2021/07/14 09:35 | Dhruva Mulye v Diego F Flores | 1-6,1-6 |
| ITF M15 Almada | 2021/07/09 10:20 | Joao Lucas Reis da Silva v Diego F Flores | 6-4,7-6 |
| ITF M15 Almada | 2021/07/08 11:15 | Diego F Flores v Takuto Niki | 6-7,6-3,6-4 |
| ITF M15 Almada | 2021/07/07 10:30 | Diego F Flores v Luis Faria | 6-3,6-7,6-3 |
| ITF M25 Bakio | 2021/06/29 09:30 | Diego F Flores v Gabriel Diaz Freire | 6-1,6-7,12-14 |
| UTR Pro Tennis Series Barcelona | 2021/06/13 10:00 | Diego F Flores v Jose Joaquin M Cisneros | 6-1,6-0 |
| ITF M25 Idanha-A-Nova | 2021/07/18 13:00 | Mario G Fernandez v Guilherme Sousa Severin | 6-3,6-4 |
| ITF M25 Idanha-A-Nova | 2021/07/11 10:30 | Miguel Damas v Mario G Fernandez | 4-6,7-6,10-7 |
| ITF M15 Marbella | 2021/05/23 14:00 | Xavi Matas Ortega v Mario G Fernandez | 6-3,6-4 |
| ITF M15 Valldoreix | 2021/05/12 11:00 | Juan Bautista Otegui v Mario G Fernandez | 6-4,6-3 |
| ITF M15 Majadahonda | 2021/05/02 13:15 | Mario G Fernandez v Carlos Lopez Montagud | 1-6,2-6 |
| ITF M25 Reus | 2021/04/11 11:00 | Titouan Droguet v Mario G Fernandez | 6-2,6-4 |
| ITF M15 Antalya | 2021/03/02 07:00 | Stefan Palosi v Mario G Fernandez | 4-6,6-0,10-5 |
| ITF M15 Antalya | 2021/03/01 10:00 | Mario G Fernandez v Marlon Vankan | 1-6,6-2,13-11 |