Stadium: Court 2 Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/06/22 09:10 | Marco Furlanetto v Thijmen Loof | 3-6,6-4,3-10 |
| ITF M15 Antalya | 2021/06/21 07:00 | Thijmen Loof v Michal Mikula | 6-2,6-1 |
| ITF M15 Antalya | 2021/06/20 07:00 | Hamza Ben Yaacoub v Thijmen Loof | 3-6,0-6 |
| ITF M15 Antalya | 2021/03/29 07:00 | Thijmen Loof v Luca Tomasetto | 4-6,2-6 |
| ITF M15 Antalya | 2021/03/21 07:00 | Thijmen Loof v Edoardo Lavagno | 3-6,4-6 |
| ITF M15 Sharm El Sheikh | 2021/03/01 13:00 | Thijmen Loof v Alessandro Pecci | 4-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/02/22 13:00 | Thijmen Loof v George Loffhagen | 4-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/02/14 11:30 | Fares Zakaria v Thijmen Loof | 6-4,7-6 |
| ITF M25 Denia | 2021/07/26 09:30 | Mario Mansilla Diez v Emilien Voisin | 6-4,2-6,6-10 |
| ITF M25 Gandia | 2021/07/21 07:30 | Mario Mansilla Diez v Alejandro Gomez | 7-5,1-6,6-7 |
| ITF M25 Gandia | 2021/07/20 10:15 | Mario Mansilla Diez v Rayane Oumaouche | 6-0,7-5 |
| ITF M25 Gandia | 2021/07/19 10:00 | Emilien Voisin v Mario Mansilla Diez | 5-7,1-6 |
| ITF M25 Bakio | 2021/06/27 16:00 | Gabriel Diaz Freire v Mario Mansilla Diez | 6-4,3-6,10-6 |
| UTR Pro Tennis Series Barcelona | 2021/06/26 09:30 | Rishab Agarwal v Mario Mansilla Diez | 6-2,5-4 |
| UTR Pro Tennis Series Barcelona | 2021/06/25 08:00 | Ervin H Eminefendic v Mario Mansilla Diez | 4-6,6-2,2-6 |
| UTR Pro Tennis Series Barcelona | 2021/06/23 08:00 | Constant De La Bassetiere v Mario Mansilla Diez | 6-1,5-1 |