Stadium: Court 3 Round: 44 Ground: Clay
| ITF M15 Nules | 2021/11/14 08:30 | Mario Mansilla Diez v Zhenxiong Dong | 6-2,6-1 |
| ITF M15 Benicarlo | 2021/11/08 10:00 | Mikel Aranzabal v Mario Mansilla Diez | 6-3,3-6,11-9 |
| ITF M15 Benicarlo | 2021/11/07 08:30 | Samuel M Arjona v Mario Mansilla Diez | 4-6,4-6 |
| ITF M15 Torello | 2021/11/05 10:00 | Lilian Marmousez v Mario Mansilla Diez | 6-4,6-4 |
| ITF M15 Torello | 2021/11/04 13:10 | Vilius Gaubas v Mario Mansilla Diez | 2-6,3-6 |
| ITF M15 Torello | 2021/11/02 15:35 | Mario Mansilla Diez v Alessandro Ingarao | 6-2,6-3 |
| ITF M15 Madrid | 2021/10/29 07:30 | Mario Mansilla Diez v Coleman Wong | 5-7,1-6 |
| ITF M15 Madrid | 2021/10/28 09:30 | Alejandro Moro Canas v Mario Mansilla Diez | 5-7,6-3,6-7 |
| ITF M15 Benicarlo | 2021/11/07 11:00 | Fermin Calvo Barcelo v Jay Friend | 0-6,5-7 |
| ITF M25 Madrid | 2021/10/24 09:30 | Serafin Zund v Fermin Calvo Barcelo | 6-4,6-4 |
| ITF M25 Quinta Do Lago | 2021/10/19 09:00 | Stuart Parker v Fermin Calvo Barcelo | 6-4,6-2 |
| ITF M25 Quinta Do Lago | 2021/10/18 14:05 | Fermin Calvo Barcelo v Raphael Calzi | 6-3,6-3 |
| ITF M25 Quinta Do Lago | 2021/10/17 12:00 | Fermin Calvo Barcelo v Jaime Faria | 7-6,6-7,10-8 |
| ITF M25 Loule | 2021/10/11 15:25 | Fermin Calvo Barcelo v Gian Luca Tanner | 3-6,7-5,8-10 |
| ITF M25 Loule | 2021/10/10 13:00 | Jeremias Lima-Perez v Fermin Calvo Barcelo | 2-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/10/02 10:00 | Fermin Calvo Barcelo v Adria Soriano Barrera | 1-6,2-5 |