The only scare for Wenger's side for the rest of the half was a 30-yard piledriver from Micael, which was pushed safely away by Fabianski.

BBC: FC Porto 2-1 Arsenal

But after Rosicky was denied a penalty, Falcao poked in a Ruben Micael free-kick after Fabianski had picked up a backpass from Campbell inside the box.

BBC: FC Porto 2-1 Arsenal

Athletic Bilbao moved into second place on six points, coming from behind to beat Portugal's Nacional, who took the lead just before halftime through Ruben Micael.

CNN: Benfica put five past weakened Everton

After an indirect free-kick was awarded, Hansson let the hosts take it quickly and Ruben Micael rolled the ball across for Falcao to side-foot home while Arsenal were still attempting to reorganise.

BBC: Arsene Wenger is unhappy with Porto's winning goal

It was another moment of madness for Arsenal's stand-in number one and worse was to come as the quick-thinking Micael passed the free-kick to Falcao, who calmly slotted the ball into the net.

BBC: FC Porto 2-1 Arsenal