Stadium: Central Round: 62
| ITF M15 Platja D'Aro | 2021/10/06 13:50 | Pol Toledo Bague v Max Houkes | 4-6,7-5,7-6 |
| ITF M15 Platja D'Aro | 2021/10/05 08:30 | Max Houkes v Tomas R Sierra | 6-2,6-0 |
| ITF M15 Platja D'Aro | 2021/10/04 11:00 | Max Houkes v Ervin H Eminefendic | 6-2,6-2 |
| ITF M15 Platja D'Aro | 2021/10/03 09:30 | Max Houkes v Luca Castagnola | 6-4,6-1 |
| ITF M15 Ulcinj | 2021/09/24 12:15 | Rrezart Cungu v Max Houkes | 6-2,6-4 |
| ITF M15 Ulcinj | 2021/09/23 09:30 | Max Houkes v Gianmarco Ferrari | 6-1,6-3 |
| ITF M15 Ulcinj | 2021/09/21 07:55 | Danilo Raicevic v Max Houkes | 4-6,4-6 |
| ITF M15 Ulcinj | 2021/09/13 12:00 | Max Houkes v Edoardo Zanada | 6-4,4-6,5-10 |
| 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 |
| ITF M25 Santander | 2021/08/22 09:00 | Jesus Echevarri v Mario Mansilla Diez | 2-6,1-6 |