Stadium: Pista Fabian Dorado Round: 27 Ground: Clay
| ITF Spain F22 | 2018/08/08 17:00 | Hidalgo, Diego v Brugnerotto, Marco | 6-1,6-3 |
| ITF Spain F22 | 2018/08/07 18:20 | Hidalgo, Diego v Chavez Villalpando, Luis Diego | 6-2,6-4 |
| Challenger Segovia Qual | 2018/07/28 11:00 | Hidalgo, Diego v Nicolas Alvarez Varona | 3-6,4-6 |
| ITF Spain F20 | 2018/07/24 08:00 | Toledo Bague, Pol v Hidalgo, Diego | 6-1,6-1 |
| ITF Spain F19 | 2018/07/20 14:00 | Hidalgo, Diego v Raul Brancaccio | 6-1,5-7,2-6 |
| ITF Spain F19 | 2018/07/19 14:00 | Pla Malfeito, Jaume v Hidalgo, Diego | 6-4,2-6,4-6 |
| ITF Spain F19 | 2018/07/17 14:00 | Hidalgo, Diego v Martinez Arjona, Samuel | 6-1,6-0 |
| ITF Spain F18 | 2018/07/12 14:15 | Javier Barranco Cosano v Hidalgo, Diego | 6-2,6-7,6-2 |
| ITF Spain F22 | 2018/08/08 18:05 | Cayre, Paul v Perez Sanz, David | 2-6,5-7 |
| ITF Spain F22 | 2018/08/06 19:45 | Uspensky, Dennis v Perez Sanz, David | 3-6,1-6 |
| Challenger Segovia Qual | 2018/07/28 13:00 | Perez Sanz, David v Doumbia, Sadio | 4-6,2-6 |
| ITF Malaysia F2 | 2018/07/12 03:00 | Perez Sanz, David v Moritani, Soichiro | 5-7,2-6 |
| ITF Malaysia F2 | 2018/07/10 05:45 | Perez Sanz, David v Sumit Sarkar | 7-5,6-0 |
| ITF Malaysia F1 | 2018/07/07 02:00 | Kim, Cheong-Eui v Perez Sanz, David | 6-3,7-5 |
| ITF Malaysia F1 | 2018/07/06 03:00 | Brugnerotto, Marco v Perez Sanz, David | 2-6,2-6 |
| ITF Malaysia F1 | 2018/07/05 05:20 | Siddharth Vishwakarma v Perez Sanz, David | 4-6,4-6 |