Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Tavira | 2023/10/15 09:00 | Oscar Lacides v Diogo Marques | 3-6,5-7 |
| ITF M25 Tavira | 2023/10/11 08:30 | Simon Freund v Diogo Marques | 6-3,7-6 |
| ITF M25 Tavira | 2023/10/10 08:30 | Diogo Marques v Tomas Vaise | 6-2,7-6 |
| ITF M25 Tavira | 2023/10/09 09:00 | Eero Vasa v Diogo Marques | 6-7,4-6 |
| ITF M25 Tavira | 2023/10/08 09:00 | Diogo Marques v Philippe Renard | 6-0,6-1 |
| ITF M25 Setubal | 2023/09/19 14:05 | Dali Blanch v Diogo Marques | 6-4,6-3 |
| ITF M25 Sintra | 2023/09/12 09:00 | Diogo Marques v Leonardo Civita-Telles | 6-4,4-6,8-10 |
| ITF M25 Sintra | 2023/09/11 13:00 | Diogo Marques v Rodrigo Deleu | 6-4,6-4 |
| ITF M25 Tavira | 2023/10/15 12:00 | Manuel Almeida v Ricardo Batista | 6-3,1-6,10-8 |
| ITF M25 Tavira | 2023/10/08 09:00 | Manuel Almeida v Francisco Oliveira | 2-6,4-6 |
| ITF M25 Setubal | 2023/09/18 09:00 | Marco Berti v Manuel Almeida | 6-0,6-1 |
| ITF M25 Sintra | 2023/09/10 08:30 | Manuel Almeida v Afonso Portugal | 3-6,1-6 |
| ITF M25 Porto | 2023/07/23 09:00 | Manuel Almeida v Karol Malirz | 1-6,3-6 |
| ITF M25 Marburg | 2023/07/03 08:00 | Manuel Almeida v Gabriel Matuszewski | 3-6,2-6 |
| ITF M25 Arlon | 2023/06/26 10:55 | Olivier Rojas v Manuel Almeida | 6-2,6-4 |
| ITF M25 Sanxenxo | 2023/04/24 11:00 | Manuel Almeida v Davide Ferrarolli | 1-6,7-5,5-10 |