Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Portimao | 2021/10/25 14:15 | Patrick Foley v Diogo Morais | 7-5,4-6,6-10 |
| ITF M25 Portimao | 2021/10/24 13:00 | Eduardo Morais v Diogo Morais | 2-6,2-6 |
| ITF M25 Setubal | 2021/10/05 10:00 | Tim Heger v Diogo Morais | 6-1,6-1 |
| ITF M25 Setubal | 2021/10/04 12:30 | Diogo Morais v Keanu Elias Immler | 6-1,6-3 |
| ITF M25 Setubal | 2021/10/03 14:00 | Diogo Morais v Pedro D L R Bueno | 6-3,7-6 |
| Challenger Lisbon | 2021/09/26 10:20 | Santiago Rodriguez Taverna v Diogo Morais | 6-0,6-2 |
| ITF M15 Almada | 2021/07/04 13:00 | Diogo Morais v Daniel Batista | 3-6,4-6 |
| ITF M25 Vale Do Lobo | 2021/03/07 12:00 | Peter Goldsteiner v Diogo Morais | 6-3,6-1 |
| ITF M25 Portimao | 2021/10/25 13:30 | Max Cunat v Alan F R Fierros | 5-7,3-6 |
| ITF M25 Quinta Do Lago | 2021/10/20 10:30 | Alan F R Fierros v Anton Matusevich | 0-6,4-6 |
| ITF M25 Quinta Do Lago | 2021/10/18 13:55 | Alan F R Fierros v Noah Thurner | 6-2,6-0 |
| ITF M25 Loule | 2021/10/12 09:30 | Adria Soriano Barrera v Alan F R Fierros | 6-4,6-4 |
| ITF M25 Loule | 2021/10/11 12:00 | Afonso Portugal v Alan F R Fierros | 2-6,6-7 |
| 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 |