Stadium: Court 1 Costa Grande Round: 25 Ground: Hardcourt outdoor
| ITF W25 Oeiras | 2021/04/25 13:00 | Justina Mikulskyte v Maria Santos | 6-1,6-3 |
| ITF W25 Oeiras | 2021/04/18 10:30 | Maria Santos v Jenny Duerst | 0-6,0-6 |
| ITF W60 Oeiras | 2021/04/11 14:05 | Katie Volynets v Maria Santos | 6-3,6-1 |
| FPT Portugal Series Women | 2020/07/10 11:00 | Ana Filipa Santos v Maria Santos | 6-2,6-3 |
| FPT Portugal Series Women | 2020/07/08 09:30 | Maria Santos v Barbara Castro | 6-4,6-2 |
| FPT Portugal Series Women | 2020/07/01 15:00 | Maria Santos v Mariana Campino | 3-6,2-6 |
| FPT Portugal Series Women | 2020/07/01 09:30 | Maria Santos v Catarina Castanho | 6-3,5-4 |
| ITF W15 Amarante | 2021/07/20 09:30 | Maria Martinez Vaquero v Sana Garakani | 7-5,6-2 |
| ITF W15 Amarante | 2021/07/19 11:00 | Sashi Kempster v Maria Martinez Vaquero | 1-6,3-6 |
| ITF W15 Almada | 2021/07/12 10:30 | Julita Saner v Maria Martinez Vaquero | 6-4,4-6,10-4 |
| ITF W15 Almada | 2021/07/11 09:30 | Maria Martinez Vaquero v Izabela Gabriela Novac | 6-2,6-1 |
| ITF W25 Madrid | 2021/06/14 09:30 | Maria Martinez Vaquero v Cristina Dinu | 0-6,2-6 |
| ITF W25 Madrid | 2021/06/13 12:00 | Warona Mdlulwa v Maria Martinez Vaquero | 2-6,4-6 |