Porto re-established their four-point lead at the top of the Liga today with a 2-0 win over Vitoria Setubal.
Lisandro Lopez was the hero, scoring a quickfire second-half double (61 and 68) to seal the points.
The win leaves Porto four points clear of second-placed Sporting with four games remaining.
Another four points back are Benfica, who held off a Maritimo comeback to win 3-2 today.
David Luiz opened the scoring after 28 minutes, before Oscar Cardozo's brace (34 and 38) seemingly made the points safe.
However, Ivanildo Marcinho pulled one back two minutes before the break and Bruno set up a nervy last half-hour by scoring in the 60th minute.
Elsewhere, Rio Ave climbed out of the relegation zone at the expense of Vitoria with a 1-0 win at Naval, while Nacional were 2-1 winners at Belenenses.