Two first-half goals gave Paris Saint-Germain a crucial Champions League win over Liverpool and left Jurgen Klopp's side, finalists last season, in danger of elimination.
Juan Bernat opened the scoring with a low finish before Neymar doubled the lead, only for James Milner to give Liverpool hope with a penalty seconds before the break.
PSG had half a chance within the opening minute when Edinson Cavanbi failed to control a long ball which, had he been able to gather it in, would have left him clean through.
Their high-tempo start continued as Marco Verratti and Angel Di Maria combined to find Kylian Mbappe, whose effort deflected off Virgil van Dijk.