| ITF M15 Marbella | 2021/05/25 07:30 | Diego F Flores v Jose Joaquin M Cisneros | 6-2,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/06/12 08:30 | Sergio Martos Gornes v Diego F Flores | 3-6,4-5 |
| UTR Pro Tennis Series Barcelona | 2021/06/11 08:00 | Alexandre Reco v Diego F Flores | 6-1,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/06/10 11:00 | Marcelo Zormann v Diego F Flores | 7-6,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/06/08 09:30 | Kuzey Cekirge v Diego F Flores | 2-6,6-1,6-5 |
| UTR Pro Tennis Series Barcelona | 2021/06/07 08:00 | Diego F Flores v Pol Toledo Bague | 4-6,3-5 |
| ITF M15 Marbella | 2021/05/30 09:00 | Diego F Flores v Yannick Mertens | 2-6,1-6 |
| ITF M15 Marbella | 2021/05/29 10:35 | Roman Andres Burruchaga v Diego F Flores | 4-6,6-3,3-6 |
| ITF M15 Marbella | 2021/05/28 09:45 | Antoine Bellier v Diego F Flores | 6-7,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/06/12 08:30 | Jose Joaquin M Cisneros v Jaume Pla Malfeito | 3-6,2-4 |
| UTR Pro Tennis Series Barcelona | 2021/06/11 11:00 | Jose Joaquin M Cisneros v Oriol Roca Batalla | 6-4,6-7,2-6 |
| UTR Pro Tennis Series Barcelona | 2021/06/09 08:00 | Jose Joaquin M Cisneros v Oscar Jose Gutierrez | 2-6,2-5 |
| UTR Pro Tennis Series Barcelona | 2021/06/08 11:00 | Jose Joaquin M Cisneros v Bruno P Navarro | 1-6,4-5 |
| UTR Pro Tennis Series Barcelona | 2021/06/07 11:00 | Pol Amoros Ramos v Jose Joaquin M Cisneros | 6-1,5-7,7-6 |
| ITF M15 Marbella | 2021/05/25 07:30 | Diego F Flores v Jose Joaquin M Cisneros | 6-2,6-4 |
| 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 |