The reigning European champions Paris St-Germain put on a dominant performance in a 2-0 victory over Liverpool.
Desire Doue's deflected strike looped over the head of Giorgi Mamardashvili to give the Ligue 1 leaders the lead, before Khvicha Kvaratskhelia doubled their advantage with a moment of brilliance.
It means the Reds, who failed to register an attempt on target, have it all to do to stay in the competition in the quarter-final second leg at Anfield next Tuesday.
PSG took the lead in the 11th minute - and dominated throughout - amid another muddled performance by Arne Slot's side that raised more questions than answers.
Mamardashvili, standing in for injured first-choice Alisson, was beaten by 20-year-old Doue's finish from inside just the box which took a wicked deflection off Virgil van Dijk and flew over the keeper into the net.
Mamardashvili recovered to make some key saves and keep Liverpool in the tie, including a fine one-handed stop to deny Georgia team-mate Kvaratskhelia before preventing Doue from a second after the Reds were carved open.
But Liverpool did fall further behind when Kvaratskhelia added the second with a lovely piece of skill after rounding the keeper after Joao Neves' defence-splitting pass.
It could have been worse for Liverpool when Warren Zaire-Emery went down after a challenge by Ibrahima Konate - but the penalty decision was overturned after the official watched the incident again on the pitchside monitor.
Ousmane Dembele also missed three glorious chances, the first when he shot straight at Mamardashvili, the second when he blazed over the bar and then when he hit the woodwork after a mistake by Jeremie Frimpong late on.
Line-ups
PSG XI: Marquinhos, Dembele, Hakimi, Safonov, Khvicha Kvaratskhelia, Vitinha, Pacho, Nuno Mendes, Zaire-Emery, Doue, João Neves
Subs: Lucas, Kang-in Lee, Gonçalo Ramos, Ilya Zabarnyi, Lucas Chevalier, Beraldo, Dro Fernández, Mayulu, Renato Marin, Mbaye
Liverpool XI: Van Dijk, Joe Gomez, Konate, Mac Allister, Szoboszlai, Giorgi Mamardashvili, Gravenberch, Jeremie Frimpong, Hugo Ekitiké, Milos Kerkez, Wirtz
Subs: Salah, Robertson, Freddie Woodman, Isak, Gakpo, Chiesa, Curtis Jones, Trey Nyoni, Kornel Misciur, Rio Ngumoha
bosskbeeee
84
Name: Arne Slot Hairstyle: Kompany Hype: Guardiola Expectation: Klopp Reality: Amorim with a little touch of Rosenior spiced up with Rooney🤌😭
Heeabilnry
49
as from today I'll not watch Liverpool again until this useless coach go
wowadrsyz
35
van dyk has mastered the art of nyashi defending
Gunnerneko
32
I wonder if Jamie Charriger watch this game tonight? you run you mouth about Arsenal let's hear your opinion about Liverpool
Derrick552
29
Gif here. Like me: https://www.matchgif.com/v2/live/matchGifs?match_id=54418739&language=en
Hritangshu93
13
The way PSG plays UCL.....I can already see another cup loading ......they are magnificent...... Enrique has signed all perfect players in perfect roles and turned it into a monster
KirundaShafique
8
I really enjoyed pacho playing today, that guy isn't talked about enough
yuhadorst
8
This will definitely discourage our good players And make it hard to convince good players to join the team. Definitely if Slot doesn’t go it is over we are just going down just like before