Porto maintained their unbeaten start to the Liga Sagres season after their 3-0 win over Vitoria Setubal on Friday.
The defending champions were keen to extend their winning streak to four matches in front of their home crowd at the Estadio Do Dragao, and second-half goals from Joao Moutinho, James Rodriguez and Fernando Belluschi did just that.
After a goalless first half, substitute Joao Moutinho opened up the scoring for Vitor Pereira's side eight minutes into the second half.
Rodriguez then doubled the hosts lead 15 minutes from time, beating Setubal goalkeeper Diego Silva.
With just two minutes remaining, Belluschi made it 3-0 to seal three points for Porto and extend their unbeaten run to an incredible 43 league matches, stretching back to February 2010.
Porto are already five points clear at the top of the table, although they have played an extra game, while Setubal slip to 10th.