Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Sintra | 2021/09/13 12:00 | Afonso Portugal v Alan F R Fierros | 2-6,2-6 |
| ITF M25 Loule | 2021/10/10 16:00 | Afonso Portugal v Pedro D L R Bueno | 6-1,6-3 |
| ITF M25 Setubal | 2021/10/03 14:00 | Sergio Davila Godoy v Afonso Portugal | 6-1,6-2 |
| ITF M25 Sintra | 2021/09/13 12:00 | Afonso Portugal v Alan F R Fierros | 2-6,2-6 |
| ITF M15 Castelo Branco | 2021/07/26 11:00 | Afonso Portugal v Raphael Lambling | 3-6,1-6 |
| ITF M15 Castelo Branco | 2021/07/25 08:00 | Afonso Portugal v Angel G Melgar | 6-1,3-6,10-6 |
| ITF M25 Vale Do Lobo | 2021/03/07 12:00 | Afonso Portugal v Lukas H Lilleengen | 2-6,2-6 |
| ITF M25 Faro | 2021/03/01 14:00 | Edouard Villoslada v Afonso Portugal | 6-1,6-0 |
| ITF M25 Faro | 2021/02/28 15:00 | Afonso Portugal v Eduardo Morais | 4-6,6-2,10-7 |
| ITF M25 Pardubice | 2021/09/20 10:00 | Tomas Lanik v Alan F R Fierros | 2-6,6-4,10-6 |
| ITF M25 Pardubice | 2021/09/19 11:00 | Michalis Sakellaridis v Alan F R Fierros | 6-7,6-4,3-10 |
| ITF M25 Sintra | 2021/09/15 12:25 | Luciano Darderi v Alan F R Fierros | 7-6,2-6,6-4 |
| ITF M25 Sintra | 2021/09/14 13:20 | Daniel Little v Alan F R Fierros | 4-6,6-7 |
| ITF M25 Sintra | 2021/09/13 12:00 | Afonso Portugal v Alan F R Fierros | 2-6,2-6 |
| ITF M25 Sintra | 2021/09/06 13:45 | Fabio Coelho v Alan F R Fierros | 3-6,7-5,11-9 |
| ITF M25 Sintra | 2021/09/05 08:30 | Alan F R Fierros v Luigi Castelletti | 6-2,6-0 |
| ITF M15 Monastir | 2021/08/31 08:00 | Kyle Seelig v Alan F R Fierros | 6-2,6-4 |