Stadium: Court 3 Round: 62 Ground: Clay
| ITF M25 Madrid | 2021/09/12 13:00 | Pascual de Zulueta, Asier v Bas Mengual, Ivan | 0-6,4-6 |
| ITF M25 Santander | 2021/08/22 11:30 | Pol Amoros Ramos v Bas Mengual, Ivan | 6-4,6-1 |
| ITF M15 Xativa | 2021/08/01 10:00 | Bas Mengual, Ivan v Jordi Garcia Mestre | 2-6,6-7 |
| ITF M25 Gandia | 2021/07/19 08:00 | Bas Mengual, Ivan v Molino, Javier | 5-7,6-4,5-10 |
| ITF M25 Gandia | 2021/07/18 08:00 | Bas Mengual, Ivan v Alex Jones | 6-4,7-5 |
| ITF M25 Bakio | 2021/06/29 11:50 | John Echeverria v Bas Mengual, Ivan | 6-3,6-0 |
| ITF M25 Bakio | 2021/06/28 13:00 | Bas Mengual, Ivan v Mazon-Hernandez, Rafael | 6-3,6-1 |
| ITF M15 Marbella | 2021/05/23 11:00 | Alejandro Moro Canas v Bas Mengual, Ivan | 6-1,6-3 |
| ITF M25 Oviedo | 2021/08/31 06:55 | Pereira, Miguel Fernando v Diego A B Sanchez | 1-6,7-6,3-6 |
| ITF M25 Oviedo | 2021/08/30 10:05 | Kuzey Cekirge v Pereira, Miguel Fernando | 5-7,6-4,8-10 |
| ITF M25 Oviedo | 2021/08/29 12:55 | Diego C. Morales v Pereira, Miguel Fernando | 1-6,3-6 |
| ITF M25 Santander | 2021/08/23 13:30 | Julio Cesar Porras v Pereira, Miguel Fernando | 6-3,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/14 08:00 | Andrey Chepelev v Pereira, Miguel Fernando | 6-4,4-6,7-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/13 09:30 | Pereira, Miguel Fernando v Jay Friend | 2-6,6-3,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/11 08:30 | Pereira, Miguel Fernando v Mas de Ugarte, Jordi | 3-6,6-3,7-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/10 11:30 | Pereira, Miguel Fernando v Kuzey Cekirge | 6-3,5-0 |