Stadium: Court 13 Round: 62 Ground: Clay
| 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 | 2021/10/12 09:00 | Matvey Minin v Kirill Mishkin | 6-3,6-0 |
| ITF M15 Platja D'Aro | 2021/10/10 11:00 | Kirill Mishkin v Valentin Lapalu | 6-4,2-6,10-7 |
| ITF M15 Platja D'Aro | 2021/10/04 11:00 | Jorge Martinez Martinez v Kirill Mishkin | 6-1,6-2 |
| ITF M15 Platja D'Aro | 2021/10/03 11:00 | Kirill Mishkin v Zakhar Trapeznikov | 2-6,6-3,10-1 |
| ITF M15 Melilla | 2021/09/25 12:10 | Daniel Rincon v Kirill Mishkin | 6-3,6-1 |
| ITF M15 Melilla | 2021/09/24 14:05 | Kirill Mishkin v Alberto Barroso Campos | 0-6,7-5,6-1 |
| ITF M15 Melilla | 2021/09/21 08:00 | Xavier Gabarro v Kirill Mishkin | 3-6,2-6 |
| 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 M25 Oviedo | 2021/08/31 10:00 | Miguel Damas v Mario Mansilla Diez | 6-7,6-2,7-5 |
| ITF M25 Oviedo | 2021/08/30 08:00 | Alejandro Mendoza v Mario Mansilla Diez | 1-6,3-6 |
| ITF M25 Oviedo | 2021/08/29 11:30 | Jaime P Targhetta v Mario Mansilla Diez | 0-6,2-6 |
| ITF M25 Santander | 2021/08/23 09:00 | Miguel Damas v Mario Mansilla Diez | 6-2,6-3 |