Barcelona delivered a stunning 4-0 victory over Real Madrid in El Clasico, ending Real's 42-game unbeaten run in La Liga. Robert Lewandowski's quick brace and goals from Lamine Yamal and Raphinha sealed the win at Santiago Bernabeu, extending Barca's league lead to six points. Hansi Flick's strategic high defensive line was pivotal, nullifying Kylian Mbappe's threat as he was caught offside multiple times. Real Madrid's struggles were compounded by underwhelming performances from key players like Jude Bellingham and Mbappe, leaving coach Carlo Ancelotti without regrets but acknowledging the challenge ahead. Barcelona's win not only signified a tactical shift under Flick but also showcased the team's resurgence and potential dominance this season.