Jose Mourinho would have envisaged a happier return to his old ground, but FC Porto decided to crash that particular party, inflicting a 2-1 defeat to Chelsea in a Group G clash of the Champions League.

With Chelsea looking to bat away their English Premier League blues with another victory in the Champions League, Porto played the party-pooper to great effect, scoring a goal in either half to ensure Mourinho would leave his former club an unhappy man.

Porto opened the scoring in the 39th minute – after Iker Casillas had made a couple of wonderful saves to stop Cesc Fabregas and Pedro from scoring – as Yacine Brahimi created havoc in the Chelsea box, before seeing his saved shot slotted in off the rebound by Andre Andre.

Chelsea, though, would make it 1-1 just before halftime, with Willian placing a freekick from outside the area perfectly into the back of the net.

With the match likely to go either way heading into the second half, it was the home team Porto who took advantage, as Maicon headed in off a corner to heighten that frown of Mourinho.

With Dynamo Kyiv also picking up a win, Chelsea are now third in the Group G table, only above Maccabi Tel Aviv, who are yet to pick up a point.