Atletico Madrid have taken a crucial step towards the semi-finals of the Champions League by beating 10-man Barcelona 2-1. Julian Alvarez scored a superb free-kick in the 20th minute, giving Atletico the lead just as Barca's Robert Lewandowski was sent off. Atletico's victory has sent shockwaves through the football world, particularly in Barcelona, where the loss has left the team with a mountain to climb. Barca will be without Lewandowski for the remainder of the tie, which will significantly impact their attacking prowess. Atletico's victory has given the team a huge boost in their Champions League campaign, which has been a source of disappointment for the team in recent seasons.