Stadium: Pista Central Round: 54 Ground: Hardcourt outdoor
| UTR Pro Tennis Series Barcelona | 2021/06/13 10:00 | Diego F Flores v Jose Joaquin M Cisneros | 6-1,6-0 |
| 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 M25 Bakio | 2021/06/27 16:00 | Gabriel Diaz Freire v Mario Mansilla Diez | 6-4,3-6,10-6 |
| ITF M25 Denia | 2019/07/22 08:30 | Gabriel Diaz Freire v Sheil Kotecha | 6-7,2-6 |
| ITF M25 Getxo | 2019/07/09 11:25 | Boris Arias v Gabriel Diaz Freire | 6-2,3-6,10-6 |
| ITF M25 Getxo | 2019/07/08 11:00 | Gabriel Diaz Freire v Paolo Dagnino | 3-6,7-6,11-9 |
| ITF M25 Bakio | 2019/07/01 08:45 | Mikel Aranzabal v Gabriel Diaz Freire | 6-3,6-2 |
| ITF USA F30 | 2018/11/02 19:30 | Mwendwa Mbithi v Gabriel Diaz Freire | 3-6,7-5,6-0 |
| ITF USA F27 | 2018/10/08 20:10 | Hendrik Jebens v Gabriel Diaz Freire | 4-6,6-3,6-2 |
| ITF USA F27 | 2018/10/07 15:00 | Gabriel Diaz Freire v Teodor Giusca | 6-4,6-4 |