Champions League quarterfinal's first leg: Porto stuns Bayern, Barca thrashes PSG

Porto's Jackson Martinez celebrates after scoring his goal against Bayern Munich during their Champions League quarterfinal first leg soccer match at Dragao stadium in Porto April 15, 2015. [Photo/Agencies]

Ricardo Quaresma's two early goals and a second-half strike from Jackson Martinez helped a slick Porto complete a stunning 3-1 home victory over a sloppy Bayern Munich in their Champions League quarter-final first leg on Wednesday.

The Portuguese side exploded into action with two goals in the opening 10 minutes, with Quaresma converting from the penalty spot and finishing neatly as Bayern's sluggish defending was punished.

Five-times champions Bayern, decimated by injuries, clawed their way back into the tie when midfielder Thiago Alcantara steered home at the far post after 28 minutes.

But Martinez pounced on an error by Jerome Boateng after 65 minutes and rounded Bayern keeper Manuel Neuer to re-establish Porto's two-goal advantage heading into the return leg on April 21.