Stadium: Court 1 Round: 25 Ground: Clay
| ITF Spain F10 Qual | 2018/04/23 10:30 | Diego Hidalgo v Aaron Cortes Alcaraz | 4-6,2-6 |
| ITF Spain F10 Qual | 2018/04/22 14:00 | Diego Hidalgo v Alejandro M Dura | 6-1,6-2 |
| ITF Spain F10 Qual | 2018/04/21 11:00 | Diego Hidalgo v Adil Kalyanpur | 6-2,6-3 |
| ITF Spain F9 Qual | 2018/04/16 11:55 | Mikhail Korovin v Diego Hidalgo | 6-4,3-6,6-2 |
| ITF Spain F9 Qual | 2018/04/15 08:00 | Juan P Canas Garcia v Diego Hidalgo | 1-6,1-6 |
| ITF Spain F9 Qual | 2018/04/14 08:00 | Dario Montes v Diego Hidalgo | 2-6,3-6 |
| ITF Tunisia F11 | 2018/03/21 08:30 | Oriol Roca Batalla v Diego Hidalgo | 7-6,6-1 |
| ITF Tunisia F11 | 2018/03/19 08:30 | Diego Hidalgo v Ivan Marrero Curbelo | 6-4,6-2 |
| ITF Tunisia F16 | 2018/04/25 09:00 | Domagoj Biljesko v Bernardo Saraiva | 2-6,2-6 |
| ITF Tunisia F15 | 2018/04/17 11:30 | Filip Duda v Domagoj Biljesko | 6-1,3-6,6-4 |
| ITF Greece F5 | 2018/03/29 07:30 | Yannick Jankovits v Domagoj Biljesko | 2-6,6-1,7-5 |
| ITF Greece F5 | 2018/03/27 09:00 | Domagoj Biljesko v Alexander Donski | 6-3,4-6,7-5 |
| ITF Greece F4 | 2018/03/21 10:10 | Domagoj Biljesko v Patrik Nema | 6-4,3-6,4-6 |
| ITF Greece F3 | 2018/03/14 11:30 | Maksim Tikhomirov v Domagoj Biljesko | 6-7,6-4,7-5 |
| ITF Egypt F7 | 2018/02/25 12:30 | Domagoj Biljesko v Arturs Lazdins | 7-6,1-6,3-6 |
| ITF Egypt F7 | 2018/02/24 12:30 | Domagoj Biljesko v Federico Lucini | 7-5,6-0 |