Boavista FC were held at home by Gil Vicente FC while FC Porto enjoyed a 4-1 victory on Saturday night.
The league champions had a frustrating evening at the Bessa stadium as they failed to find a way past a determined Gil Vicente side. Goalkeeper Ricardo Pereira extended his unbeaten run to 583 minutes, but there was a lack of cutting edge up front from the UEFA Champions League contenders.
Rui Lima goes close
Rui Lima spurned a good chance in either half, firing wide with his first attempt and putting his second shot straight at Gil Vicente goalkeeper Paulo Jorge, but there were no such striking problems for Porto.
Porto overwhelm Setúbal
Vitória Setúbal found Porto in uncompromising form at the Do Bonfim stadium and were chasing the game from the 18th minute when an own goal by midfield player Rui Anes André gave the visitors a 1-0 lead.
Postiga scores twice
The home side held out for another hour before Costinha doubled Porto's advantage with a goal on 79 minutes. Although Setúbal pulled a goal back through Hugo Henrique Arantes with a minute remaining, Porto were not finished and Heldér Manuel Postiga struck twice in added time to give his side an emphatic 4-1 win.
The results leave Boavista at the top of the table with a two-point lead over Sporting Clube de Portugal who are in action on Sunday. Porto are in third place, four points behind their local rivals.