Must-win games on the road for Barcelona and Atletico Madrid

MADRID, Nov. 5 (Xinhua) -- FC Barcelona return to Champions League action on Wednesday night when they go to Serbia to play Red Star Belgrade (Crvena Zvezda).

Hansi Flick's side traveled after another convincing win at home to Espanyol on Sunday in another game in which their rivals were unable to deal with their high press and in which their offside trap worked to annul two Espanyol "goals" for offside.