FC Porto are Portuguese Liga champions having won 2-1 at rivals and titleholders SL Benfica.
Thirteen points clear of the Eagles at the start of the day, Porto now have an unassailable 16-point advantage with five league fixtures remaining. Fredy Guarín gave André Villas-Boas's side a ninth-minute lead at the Estádio da Luz, before Javier Saviola equalised from the penalty spot (17).
Hulk struck for the 21st time in the league this season on 26 minutes to put Porto in front once more, and the visitors this time held on to their advantage, ensuring they reclaimed the top-flight crown from Benfica.
It is the second time Porto have celebrated winning the title at the home of their rivals, following a 3-2 win back in 1939/40. In Villas-Boas's first season at the helm, the Dragons have won 23 of their 25 league fixtures and remain on course to finish the campaign undefeated.
"We struggled a lot and suffered, but now it is time to celebrate," said Porto keeper Helton. "Our results speak for themselves." Defender Maicon added: "This title is very special as it was achieved at our rivals' home. We have to salute the team. We showed great strength during the season and I want to thank the support we received from the stands."
"My goal was important," said Hulk. "We knew we were facing a great team but we were humble. We have to congratulate the team, not only me and Guarín but all the players. We achieved the most important thing, the championship, but we cannot relax as we want to finish the league without a defeat."
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