Maritimo is looking for their first win in five games when they face defending champions Sporting Lisbon at the Estadio Jose Alvalade on Friday.
The hosts returned to winning ways against newly promoted Estoril Praia last Sunday back and will try to keep the Moloch going.
To maintain its unbeaten start in the Primeira Liga, Porto will travel to the Estadio Cidade de Barcelos on Friday to face Gil Vicente.
The hosts, who are currently in the upper half of the table, go into the last four games without a win and want to end this weak series of results.
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