Stadium: Court 3 Round: 25
| ITF M15 - Platja D'Aro | 2021/10/12 08:30 | Guy Den Heijer v Marc Othman Ktiri | 6-4,6-2 |
| ITF M15 - Platja D'Aro | 2021/10/11 08:30 | Guy Den Heijer v Aaron Cohen | 4-6,7-6,10-4 |
| ITF M15 - Platja D'Aro | 2021/10/10 08:00 | Guy Den Heijer v Samir Hamza Reguig | 6-1,6-0 |
| ITF M15 - Platja D'Aro | 2021/10/08 12:00 | Guy Den Heijer v Ivan Gakhov | 5-7,4-6 |
| ITF M15 - Platja D'Aro | 2021/10/07 14:25 | Daniel Merida Aguilar v Guy Den Heijer | 3-6,2-6 |
| ITF M15 - Platja D'Aro | 2021/10/06 08:25 | Guy Den Heijer v Alexis Musialek | 5-7,6-4,6-1 |
| UTR Pro Tennis Series - Mulheim | 2021/09/25 13:30 | Colin Sinclair v Guy Den Heijer | 2-6,3-5 |
| UTR Pro Tennis Series - Mulheim | 2021/09/25 08:30 | Mikhail Minakov v Guy Den Heijer | 3-6,6-6 |
| ITF M15 - Platja D'Aro | 2021/10/06 08:30 | Fermin Tenti v Carlos Lopez Montagud | 2-6,7-6,2-6 |
| ITF M15 - Cairo | 2021/10/02 09:50 | Fermin Tenti v Lorenzo Rottoli | 0-6,3-6 |
| ITF M15 - Cairo | 2021/10/01 10:30 | Gabriel Ciro Da Silva v Fermin Tenti | 6-7,6-3,6-7 |
| ITF M15 - Cairo | 2021/09/30 08:30 | Lorenzo Gagliardo v Fermin Tenti | 7-6,4-6,3-6 |
| ITF M15 - Cairo | 2021/09/29 07:30 | Sean Hess v Fermin Tenti | 4-6,0-6 |
| ITF M15 - Cairo | 2021/09/24 10:15 | Fermin Tenti v Simone Roncalli | 2-6,4-6 |
| ITF M15 - Cairo | 2021/09/23 09:30 | Fermin Tenti v Gabriele Bosio | 6-1,6-7,6-3 |
| ITF M15 - Cairo | 2021/09/22 12:00 | Fermin Tenti v Roland Stuurman | 6-3,6-4 |