Marquez admits Barcelona missing "sacrifice and effort"
The Mexico international told reporters that the team is missing "sacrifice and effort" and away from home they've failed to "push harder and work" to break teams down.
"We regular face opposition that give you little room to create chances," said the defender. "The only way to overcome that is to work more in order to find holes in their defence and surprise them with our pace.
"We must try to play away from home like we do at the Nou Camp."