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