Stadium: Court TBA Round: 62 Ground: Clay
| Challenger Lisbon Qual | 2018/05/12 14:00 | Francisco Dias v Juan Ignacio Galarza | 4-6,2-6 |
| Challenger Braga Qual | 2018/05/05 09:00 | Francisco Dias v Martim L Prata | 4-6,5-7 |
| ITF Spain F10 Qual | 2018/04/22 14:00 | Jaume Pla Malfeito v Francisco Dias | 2-6,6-3,6-2 |
| ITF Spain F10 Qual | 2018/04/21 15:30 | Francisco Dias v Lluis Dolz | 7-5,6-2 |
| ITF Portugal F8 | 2018/04/18 15:00 | Niels Desein v Francisco Dias | 6-1,4-6,6-1 |
| ITF Portugal F8 Qual | 2018/04/16 09:30 | Francisco Dias v Lluis Dolz | 6-3,3-6,6-2 |
| ITF Portugal F8 Qual | 2018/04/15 09:00 | Francisco Dias v Alex M Pujolras | 6-2,6-4 |
| ITF Portugal F7 Qual | 2018/04/09 15:25 | Jules Okala v Francisco Dias | 7-5,6-2 |
| ITF Spain F7 | 2018/03/17 09:30 | Oriol Fillat Gimenez v John Echeverria | 1-6,2-6 |