After losing 4-0 in the first game, Dortmund had nothing to lose on Tuesday and attacked Barcelona from the start.

Barcelona coach Hansi Flick said the second game was hard, even though his team was winning by four goals.

I thought this might happen," Flick told Amazon Prime. "Today, we should say well done to Dortmund, they played well, and well done to my team, they are in the next round.

Barcelona's main goal scorers, Raphinha and Robert Lewandowski, had a quiet game and didn't score. They usually score many goals, but they didn't create many good chances. Raphinha had one shot, but the goalkeeper saved it easily.

After the game, coach Niko Kovac said that Guirassy is very important for Dortmund. He also said that Guirassy needs help from his teammates, just like other players who score goals.

Some people thought Dortmund might lose the first game of the quarterfinal. Also, their captain Emre Can and another player, Carney Chukwuemeka, were injured and could not play that day.

For a time, Guirassy made hard things look possible.

Guirassy had chances to score before, but he scored a goal from a penalty kick after the Barcelona goalkeeper hit Pascal Gross.

Guirassy scored with his head, making the score 2-0 after 49 minutes. Then, Ramy Bensebaini accidentally kicked the ball into his own goal. This made it very hard for Dortmund to win. The ball came from Fermín López and hit Bensebaini's foot before going in. This was bad for Dortmund because Bensebaini had helped them before by passing the ball to Guirassy for his second goal.

Guirassy scored his third goal because Ronald Araujo made a mistake. He shot strongly from close to the goal in the 76th minute. Now he is the best scorer in the Champions League this season with 13 goals.

This gave Dortmund hope that they could make a very great comeback in the Champions League, like Barcelona did against Paris Saint-Germain in 2017, but Barcelona won in the end.

Barcelona will play against Inter Milan or Bayern Munich in the semifinal. This is the first time they are in the last four teams in the Champions League since 2019. Also, PSG won their game against Aston Villa by a total score of 5-4 and are in the semifinals too. They lost the second game 3-2, but still won overall.

This was the first time Barcelona lost a game since December 21. It was also the first time they lost in the Champions League since September. The team had only lost seven times in 50 games with this coach. The German coach had won all seven games against the other team before, when he was the coach of Barcelona and Bayern.

Dortmund might not hear the Champions League song in their stadium again soon.

Last year, the team was second in the Champions League. This year, they are eighth in their league (the Bundesliga). There are five games left. They need six more points to get a place in the Champions League next year.