FC Barcelona suffered a huge setback as Atlético Madrid secured a clinical 2-0 win. A red card to Pau Cubarsí changed the game, while Julián Álvarez and Alexander Sørloth sealed a famous victory in this intense UEFA Champions League clash.0:00 - Atletico Madrid stun Barcelona at Camp Nou with a massive 2-0 win0:40 - VAR drama as Cubarsi sent off for last-man foul2:10 - Clinical finishing vs wasteful dominance tells the story