After the game, Barca coach Ronald Koeman admitted that his team has been struggling.
"You always have to aspire to win everything," he said, "but we have to recognize that we're short in certain areas."
But Koeman went out of his way to protect Dest and Pedri, the youngest Barca starter at the age of 18.
"I have said several times that we're on the right path," he said, "but we lack things. Dest at 20, in four years will be better. Pedri, at his age is already brilliant, but in five years he will be better than any PSG midfielder. It's tough, especially with the [demands] from the press. But I am realistic. I always defend my team. We did everything. We can defend better; we can be more aggressive and we're going to change that and work on it."
Feb. 16 in Barcelona
Barcelona 1 Paris SG 4. Goals: Messi pen. 27; Mbappe 32, 64, 85; Kean 70.
Barcelona -- Ter Stegen; Dest (Mingueza 71), Pique (Riqui Puig 78), Lenglet, Alba; De Jong, Sergio Busquets (Pjanic 78), Pedri (Trincao 78); Messi, Griezmann (Braithwaite 84), Dembele.
Paris SG -- Navas; Florenzi (Kehrer 89), Marquinhos, Kimpembe, Kurzawa; Paredes, Gueye (Herrera 46); Kean (Danilo 84), Verratti (Draxler 73), Mbappe; Icardi.
Adams' RB Leipzig fell to Liverpool, 2-0, in a match moved to Budapest because travel restrictions prevented Liverpool from entering Germany.
Adams was something of a surprise starter, lining up at right wing back while Frenchman Nordi Mukiele started on the right side of the backline. Both Liverpool goals were gifts by Leipzig players, Marcel Sabitzer and Mukiele.
Adams, who played in a role since to his first start with the U.S. national team under Gregg Berhalter, was involved in the Leipzig attack, setting up South Korean Hwang Hee-chan for a chance at the end of the game.
Feb. 16 in Budapest
RB Leipzig 0 Liverpool 2. Goals: Salah 53, Mane 58.
RB Leipzig -- Gulacsi; Mukiele (Orban, 64), Upamecano, Klostermann; Adams, Haidara (Poulsen 64), Kampl (Hwang, 73), Sabitzer, Angelino; Dani Olmo, Nkunku.
Liverpool -- Alisson; Alexander-Arnold, Kabak, Henderson, Robertson; Wijnaldum, Thiago (Oxlade-Chamberlain 72), Curtis Jones; Salah (Williams 90), Firmino (Shaqiri 72), Mane.