Stadium: Court 7 Round: 28 Ground: Hardcourt outdoor
| ITF Portugal F6 MD | 2018/03/29 16:30 | Diez S / Mardones B v Cabral F / Cacao T | 7-6,6-3 |
| ITF Portugal F6 MD | 2018/03/27 16:30 | Diez S / Mardones B v Virgili AD/Virgili AU | 7-6,6-1 |
| ITF Portugal F5 MD | 2018/03/23 17:55 | Cabral F / Cacao T v Diez S / Mardones B | 2-6,6-4,10-7 |
| ITF Portugal F5 MD | 2018/03/20 16:45 | Diez S / Mardones B v Ortega-Olmedo R / Vega Hernandez D | 6-3,6-4 |
| ITF China F3 MD | 2018/01/23 07:00 | Purcell R / Tanuma R v Diez S / Mardones B | 6-3,6-4 |
| ITF China F2 MD | 2018/01/17 08:15 | Cui J / Wang R v Diez S / Mardones B | 6-3,6-4 |
| ITF China F2 MD | 2018/01/16 10:15 | Ji A / Liu H v Diez S / Mardones B | 0-6,4-6 |
| ITF Tunisia F31 MD | 2017/10/22 13:15 | Diez S / Mardones B v Den Heijer G / Pontjodikromo S | 6-2,6-4 |
| ITF Portugal F6 MD | 2018/03/29 14:10 | Artunedo Martinavarro A / Falcao G v Fruttero J-P / Neuchrist M | 7-5,4-6,11-9 |
| ITF Portugal F6 MD | 2018/03/28 15:10 | Dischinger E / Russi E v Artunedo Martinavarro A / Falcao G | 3-6,6-7 |