Stadium: Court 2 Round: 44 Ground: Hardcourt outdoor
| ITF M25 Madrid | 2023/09/13 10:40 | John Echeverria v Mikel Martinez | 6-4,6-3 |
| ITF M25 Madrid | 2023/09/12 10:30 | Mikel Martinez v Peetu Pohjola | 2-6,7-6,10-6 |
| ITF M25 Madrid | 2023/09/10 15:00 | Mikel Martinez v Markus G Garcia | 6-3,6-0 |
| ITF M15 Madrid | 2023/09/06 08:00 | Jorge Martinez Martinez v Mikel Martinez | 6-2,6-1 |
| ITF M25 Oviedo | 2023/08/29 15:30 | Louis Dussin v Mikel Martinez | 6-4,6-3 |
| ITF M25 Oviedo | 2023/08/28 16:20 | Gonzalo Fernandez v Mikel Martinez | 1-6,0-6 |
| ITF M25 Santander | 2023/08/22 11:10 | Ryan Nijboer v Mikel Martinez | 6-1,6-2 |
| ITF M25 Santander | 2023/08/20 09:00 | Martinez Arjona, Samuel v Mikel Martinez | 7-6,0-6,13-15 |
| Tavira, Simples M-ITF-POR-14A | 2023/10/16 08:30 | Eero Vasa v Valdoleiros, Guilherme | 6-4,6-2 |
| Tavira, Simples M-ITF-POR-14A | 2023/10/15 09:00 | Jamie Krattiger v Valdoleiros, Guilherme | 3-6,2-6 |
| Tavira, Simples M-ITF-POR-14A | 2023/10/09 11:30 | Molloy, Jack v Valdoleiros, Guilherme | 6-4,6-2 |
| Tavira, Simples M-ITF-POR-14A | 2023/10/08 11:30 | Mazon-Hernandez, Rafael v Valdoleiros, Guilherme | 3-6,7-6,3-10 |
| ITF M25 Setubal | 2023/09/19 09:00 | Rafael I Luque v Valdoleiros, Guilherme | 6-1,6-2 |
| ITF M25 Setubal | 2023/09/18 09:00 | Tiago Boschmans v Valdoleiros, Guilherme | 2-6,0-6 |
| ITF M25 Sintra | 2023/09/11 13:00 | Valdoleiros, Guilherme v Marcus Walters | 7-6,1-6,6-10 |
| ITF M25 Sintra | 2023/09/11 09:00 | Alfredo Casso v Valdoleiros, Guilherme | 3-6,3-6 |