In Hansi Flick's debut as Barcelona's coach, Robert Lewandowski scored twice to lead the team to a 2-1 victory over Valencia in their La Liga opener. Valencia initially took the lead with a goal from Hugo Duro just before halftime, but Lewandowski equalized in stoppage time and converted a penalty early in the second half. Despite fielding a young lineup, including 17-year-olds Lamine Yamal and Marc Bernal, Barcelona managed to secure the win at the challenging Mestalla stadium. Flick noted that the team's performance improved in the second half, emphasizing the importance of starting the season with a victory. Meanwhile, Inter Milan's Serie A title defense began with a disappointing 2-2 draw against Genoa, where they conceded a late equalizer after leading late in the match.