Newcastle were rocked by a late Liverpool winner at Anfield despite debutant Alexander Isak's goal.. United fans had their first glimpse of Isak when the Swedish forward cut inside before shooting over, while Ryan Fraser also sent an effort over the crossbar following a good move from Eddie Howe's side.
Dan Burn then had to be alert to stop Dias in full flow while Kieran Trippier and Matt Targett both cut out good opportunities for Liverpool, with United looking to hit the hosts on the break.
Trippier tested Alisson with a fierce free-kick after Fabinho fouled Joe Willock, but the Brazilian was firmly behind his shot. Liverpool then had a big chance when Firmino played in Dias, but the striker fired over after Nick Pope forced him wide.