Stadium: Pista 4 Round: 26 Ground: Clay
| ITF M15 - Girona | 2021/10/20 11:20 | Maxime Mora v Mario Mansilla Diez | 2-6,7-5,5-7 |
| ITF M15 - Girona | 2021/10/19 08:00 | Ignasi De Rueda De Genover v Mario Mansilla Diez | 0-6,4-6 |
| ITF M15 - Girona | 2021/10/18 08:00 | Mario Mansilla Diez v Noah Lopez | 6-2,6-0 |
| ITF M15 - Girona | 2021/10/17 10:30 | Kirill Mishkin v Mario Mansilla Diez | 1-6,0-6 |
| ITF M15 - Platja D'Aro | 2021/10/10 11:00 | Max Houkes v Mario Mansilla Diez | 6-3,6-4 |
| ITF M15 - Platja D'Aro | 2021/10/05 08:30 | Jose Fco. Vidal Azorin v Mario Mansilla Diez | 6-1,6-4 |
| ITF M15 - Melilla | 2021/09/24 16:30 | Alex M Pujolras v Mario Mansilla Diez | 6-0,6-3 |
| ITF M15 - Melilla | 2021/09/21 16:35 | Oscar Weightman v Mario Mansilla Diez | 1-6,6-2,0-6 |
| ITF M15 - Girona | 2021/10/20 08:00 | Jaime Caldes v Pol Toledo Bague | 4-6,0-6 |
| ITF M15 - Platja D'Aro | 2021/10/16 11:00 | Carlos Sanchez Jover v Pol Toledo Bague | 7-5,7-6 |
| ITF M15 - Platja D'Aro | 2021/10/15 14:05 | Pol Toledo Bague v Aleksandre Metreveli | 7-5,6-3 |
| ITF M15 - Platja D'Aro | 2021/10/14 12:35 | Clement Tabur v Pol Toledo Bague | 3-6,5-7 |
| ITF M15 - Platja D'Aro | 2021/10/13 10:05 | Kirill Mishkin v Pol Toledo Bague | 1-6,1-6 |
| ITF M15 - Platja D'Aro | 2021/10/08 14:00 | Pol Toledo Bague v Carlos Sanchez Jover | 6-3,6-3 |
| ITF M15 - Platja D'Aro | 2021/10/07 10:30 | Pol Toledo Bague v Carlos Lopez Montagud | 3-6,7-5,6-4 |
| ITF M15 - Platja D'Aro | 2021/10/06 13:50 | Pol Toledo Bague v Max Houkes | 4-6,7-5,7-6 |