Stadium: Court 4 Round: 44 Ground: Hardcourt outdoor
| ITF M15 - Marbella | 2021/05/24 08:00 | Diego F Flores v Jim Walder | 6-4,7-5 |
| ITF M15 - Marbella | 2021/05/23 08:00 | Diego F Flores v Ignacio B Alia | 6-2,6-2 |
| ITF M25 - Vic | 2021/05/17 08:00 | Laurent Lokoli v Diego F Flores | 7-6,7-6 |
| ITF M25 - Vic | 2021/05/16 07:00 | Roman Andres Burruchaga v Diego F Flores | 5-7,3-6 |
| ITF M15 - Valldoreix | 2021/05/10 08:00 | Diego F Flores v Oleg Prihodko | 1-6,6-4,11-13 |
| ITF M15 - Valldoreix | 2021/05/09 12:00 | Diego F Flores v Juan Ignacio Alcalde | 6-1,6-3 |
| ITF M15 - Majadahonda | 2021/05/02 13:15 | Juan Bautista Otegui v Diego F Flores | 6-3,6-4 |
| ITF M15 - LPD Gran Canaria | 2021/04/28 11:25 | Alexander Weis v Diego F Flores | 0-6,6-2,6-3 |
| ITF M15 - Marbella | 2021/05/24 08:00 | Joao Graca v Jose Joaquin M Cisneros | 4-6,5-7 |
| ITF M15 - Marbella | 2021/05/23 08:00 | Inigo G Olasagasti v Jose Joaquin M Cisneros | 3-6,1-6 |
| ITF M15 - LPD Gran Canaria | 2021/04/28 13:20 | Kyrian Jacquet v Jose Joaquin M Cisneros | 6-1,6-4 |
| ITF M25 - Reus | 2021/04/12 07:30 | Jose Joaquin M Cisneros v Michiel de Krom | 0-6,6-4,10-12 |
| ITF M25 - Reus | 2021/04/11 11:00 | Jose Joaquin M Cisneros v Inaki Cabrera Bello | 3-6,6-3,10-5 |
| ITF M25 - Vale Do Lobo | 2021/03/08 12:00 | Adrien Gobat v Jose Joaquin M Cisneros | 0-6,6-4,11-9 |
| ITF M25 - Faro | 2021/03/01 10:00 | Yann Wojcik v Jose Joaquin M Cisneros | 6-2,6-2 |
| ITF M25 - Faro | 2021/02/28 11:00 | Adria V. Ferrer v Jose Joaquin M Cisneros | 1-6,2-6 |