Barcelona roared over the line in their El Clasico struggle with Real Madrid to go to the edge of the La Liga title.
Four goals from the first half caused a sensational turning point when Hansi Flick's side stormed a 4-3 victory over home, even though Kylian Mbappe packs a hat trick.
The victory against their brightest rivals means that Flick now only needs one victory to secure the competition crown with three more games to play.
Teenage sensation Lamine Yamal remains a driving force in the Flick team, while this season he competed against Los Blancos for the third time.
That moves the 17-year-old to 15 goals about all the competitions in just his second full season in the first team of Barcelona.
The Spain International has already built up an army of fans in his young career with experts and former players who stand in line to claim that he could become all time.
One of his biggest supporters is former Barcelona striker Henry with the Frenchman who is present in the Estadi OlÃmpic LluÃs Company for the victory.
Henry previously made a brutal request to Lamine Yamal – after Barcelona's UEFA Champions League Semi Final First Been victories over Inter Milan in April – and the couple sealed the deal on full -time.
Lamine Yamal promised a shirt change with Henry and the club confirmed a fantastic moment between Barcelona stars from the past and present.
The victory on Espanyol on 15 May can ensure that an El Clasico and Catalan Double in less than a week for Flick as part of a fantastic end of his debut campaign.
Espanyol is not completely safe for relegation danger on their way to the last few games and they probably need two or three points in the run-in to be completely sure of survival.