Osasuna ended Barcelona's perfect start to the La Liga season with a convincing 4-2 victory, leaving coach Hansi Flick to shoulder the blame for his team's heavy rotation. Despite winning their first seven matches, Barcelona struggled as Ante Budimir scored twice and Bryan Zaragoza netted another, while Pau Victor and Lamine Yamal managed to pull back two goals for the visitors. The defeat thwarted Barcelona's chance to match their record of eight consecutive league wins and meant they could not extend their lead over second-place Real Madrid. Flick admitted that the numerous changes in the lineup contributed to the poor performance, especially with several key players missing due to injury. He expressed responsibility for the loss, emphasizing the need for squad management given the busy schedule ahead, particularly with a Champions League match approaching. Osasuna's victory marked their first win over Barcelona in nine attempts, showcasing their strong home form.