This was the kind of Champions League night that reminds you why the competition still commands attention even in a format bloated beyond recognition. PSG and Barcelona — their 14th meeting in Europe's top club competition in 13 years — produced a game that swung on individual brilliance, defensive lapses, and the sheer nerve of players willing to shoot from distance when the match was balanced on a knife edge. PSG opened through Désiré Doué, who is fast becoming the story of their season. Yamal's giveaway in his own half was punished with the kind of footwork-to-finish sequence that belongs in a highlight reel: Doué controlled, danced, and buried it low into the corner. The home side deserved the lead, but Barcelona equalized through 17-year-old Xavi Espart shortly after half-time — a reminder that Barça's production line of teenagers remains absurdly functional. The second half became increasingly unhinged. Lucas Hernandez — in the side specifically to mark Yamal, with Nuno Mendes absent — headed PSG back in front from a corner, only his third goal in over 100 appearances for the club. Then Luis Enrique subbed him off, and his replacement Warren Zaïre-Emery immediately got caught under a high ball, gifting Yamal the space to stab in his 10th of the campaign. It was the kind of coaching decision that looks brilliant in theory and disastrous in execution. Vitinha settled it. The Portuguese midfielder — third in last year's Ballon d'Or — controlled on his chest and fired from outside the box with the composure of someone who has decided the outcome of this match is his business. Fabián Ruiz added a fourth from close range to make it 4-2, and PSG had their third win from three in this season's Champions League. The cost may be steep. Ousmane Dembélé, last year's Ballon d'Or winner, came off after just 20 minutes with a hamstring injury. Kvaratskhelia, who had hit the post inside 90 seconds, also departed hurt. PSG have the depth to absorb one absence; two simultaneous injuries to their primary attacking threats is a different proposition entirely. For Barcelona, the defeat stings less than it might. They'd arrived on an 11-game winning streak across all competitions and had already scored 50 goals this season before Yamal's strike. The bigger game is Sunday — beat Real Madrid at home and they go nine points clear in La Liga. Hansi Flick kept Rodri on the bench at kickoff, which tells you everything about where Barcelona's priorities sit this week. The broader picture: PSG have now won seven straight between Ligue 1 and Champions League and look like the team everyone else needs to figure out a plan for. But the Champions League has a way of punishing sides that burn through their squad in October. Whether Dembélé and Kvaratskhelia are out for days or weeks will determine whether this was a statement or a pyrrhic victory.