Barcelona suffered their first La Liga defeat of the season, losing 4-2 to Osasuna. Manager Hansi Flick took full responsibility, citing his decision to rotate the squad ahead of a Champions League match as a contributing factor. Key players like Lamine Yamal and Raphinha were benched, and the changes backfired as Osasuna exploited the altered lineup with a high-pressing, counter-attacking strategy. Despite dominating possession, Barcelona struggled to create meaningful chances until late in the game. Controversial refereeing decisions and defensive errors also played a role in the defeat. Barcelona remains top of the points table but will need to bounce back quickly with an upcoming Champions League fixture against Young Boys.