Alexander Isak scored an early goal for Newcastle but it proved somewhat futile as the Magpies suffered a 2-1 defeat at Liverpool.
The Swedish striker, who joined the club for a record £60million last week, ruthlessly dismissed the visitors after being played by Sean Longstaff.
Isak though doubled his goal for Newcastle with a superb finish early in the second half but was denied his second due to offside.
And Liverpool equalized just after the hour mark when Roberto Firmino flicked the ball past Nick Pope.
The match appeared to drift to a draw but substitute Fabio Carvalho scrambled for the winner eight minutes into stoppage time.
And talkSPORT’s Danny Mills thinks Newcastle struggled to leave Anfield empty-handed.
“Very, very lucky. Liverpool were poor tonight,” Mills said in commentary for talkSPORT.
“Newcastle were unhappy, they deserved more of this.”
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The goal came as the clock read 97 minutes and nine seconds after just five minutes of stoppage time and tempers frayed between the benches.
It was a stunning end to a night that had seen Liverpool stutter for long stretches.
Eddie Howe’s stubborn side had made life difficult from the start, with debutant Isak blazing on the first notable chance of the night.
Newcastle balanced defensive rigidity with the ability to put together threatening attacking moves, including one that ended with Ryan Fraser spinning and netting in from the edge of the box.
Kieran Trippier slipped as he struck a well-placed free-kick straight at Alisson Becker as murmurs of frustration pierced the air at Anfield at times.
Luis Diaz proved his worth as always and was slipped by Firmino and rounded Nick Pope, only to go overboard and shoot off target.
A mixture of stingy defending and poor decision-making in attack meant it was Liverpool’s best chance of a first half as Newcastle took the lead four minutes later.
Trent Alexander-Arnold’s undershot diagonal ball was clipped and Newcastle quickly attacked, Miguel Almiron pulling Virgil van Dijk out of position before passing to Trippier.
Jordan Henderson toed the ball from inside right-back but only pushed into the path of Sean Longstaff, who coolly slipped a pass past Fabinho and behind for Isak to strike home forcefully in front of the displacement support.
Newcastle slowed down the game before half-time, irritating the majority inside Anfield.
Liverpool started the second half awkwardly as they looked for a leveler and saw Isak find the net with an even better goal than his thunderous opener.
Shortly after Henderson saw penalty calls ignored from a corner, Isak burst in and continued to chip away at Andy Robertson and Joe Gomez before beating Alisson past the Kop.
But the flag went up late for offside against Isak – a decision ratified by VAR and a moment that rocked Liverpool in life.
The impressive Harvey Elliott showed quick feet and forced Pope into a low save to his right and by the 60th minute the Red hordes were delighted.
A sweeping move ended with Mohamed Salah playing for Firmino to hit the Newcastle goalkeeper for the first time.
Liverpool pushed with renewed intensity for a winner, but without much creativity.
Diaz saw a piledriver saved by Pope, who again denied it shortly after before Fabinho struck twice.
Salah saw a shot in stoppage time blocked by Dan Burn, leading to what would prove to be a crucial corner.
Shot with hope more than expected, Carvalho was alert when the ball finally fell at the far post for him to drive home.
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