
In one of the worst performances of the Hansi Flick era, Barcelona's historic unbeaten run to start 2025 came to an end, falling 1–3 to Borussia Dortmund in the second leg of the Champions League quarterfinals. However, Barça's 4–0 first leg win saw them clinch the tie 5–3 on aggregate to advance to the semifinals.
Borussia Dortmund overwhelmed Barcelona from the start, tallying four shots on target in the opening 10 minutes. The fourth one was a Serhou Guirassy penalty-kick that opened the scoring for the hosts, giving Borussia Dortmund 80 minutes to score three more goals to equal the biggest comeback in Champions League knockout stage history.