Stadium: C Round: 26 Ground: Clay
| Challenger Mestre | 2018/05/23 13:35 | Boluda-Purkiss, Carlos v Marcora, Roberto | 4-6,7-5,3-6 |
| Challenger Mestre Qual | 2018/05/21 09:30 | Marcora, Roberto v Juan Pablo Ficovich | 5-7,7-5,6-1 |
| Challenger Mestre Qual | 2018/05/20 09:50 | Marcora, Roberto v Giacalone, Omar | 7-5,7-6 |
| Challenger Mestre Qual | 2018/05/19 12:00 | Joao Menezes v Marcora, Roberto | 5-7,3-6 |
| Challenger Lisbon Qual | 2018/05/12 10:50 | Marcora, Roberto v Granollers, Gerard | 5-7,6-7 |
| Challenger - Rome | 2018/05/08 12:05 | Quinzi, Gianluigi v Marcora, Roberto | 6-4,6-4 |
| Challenger Rome Qual | 2018/05/07 08:00 | Cervantes, Inigo v Marcora, Roberto | 5-7,7-6,6-3 |
| Challenger Rome Qual | 2018/05/06 10:10 | Daniel Masur v Marcora, Roberto | 6-1,2-6,5-7 |
| Challenger Mestre | 2018/05/23 14:55 | Guttierrez-Ferrol, Sergio v Miljan Zekic | 6-1,7-5 |
| ITF Spain F11 | 2018/05/19 09:00 | Guttierrez-Ferrol, Sergio v Salman, Omar | 3-6,5-7 |
| ITF Spain F11 | 2018/05/18 09:00 | Guttierrez-Ferrol, Sergio v Sebastian Korda | 6-7,6-1,6-3 |
| ITF Spain F11 | 2018/05/17 12:25 | Guttierrez-Ferrol, Sergio v Mikhail Korovin | 6-2,6-2 |
| ITF Spain F11 | 2018/05/16 13:20 | Guttierrez-Ferrol, Sergio v Andrey Chepelev | 6-2,6-3 |
| Challenger Braga | 2018/05/11 13:00 | Gastao Elias v Guttierrez-Ferrol, Sergio | 6-3,6-2 |
| Challenger Braga | 2018/05/09 11:00 | Guttierrez-Ferrol, Sergio v Gleb Sakharov | 6-3,6-4 |
| Challenger Braga | 2018/05/08 11:25 | Guttierrez-Ferrol, Sergio v Sumit Nagal | 6-4,6-0 |