Andy Robertson went from villain to hero to help Liverpool remain unbeatable at home.

The Kop defender's howler gifted Arsenal hope of being the first side to win at Anfield in the Premier League since April 2017.

It was his defensive calamity which gifted Alexandre Lacazette the opener.

But, after a Sadio Mane tap in had levelled it up, the Scot provided a striker's finish after he was found by fellow full-back Trent Alexander-Arnold.

While new boy Diogo Jota got his first goal for the club after his £41m move from Wolves on his first Premier League appearance for the Reds.

Lacazette's goal came on the back of Robertson's error in the first half

Jota will have been bought for moments like this, when Jurgen Klopp's side need something different to secure a win or complete a comeback.

And he delivered with a fine finish late on to ensure the Reds' perfect start to the campaign continued.

Liverpool came into the game on the back of 60 previous unbeaten games on this turf.

Their defence didn't look as good as that record suggested for the Gunners opener in the 25th minute.

Mane equalises for Liverpool just three minutes after Lacazette's goal

Lacazette fizzed a ball out to Ainsley Maitland-Niles as Arsenal finally broke past Liverpool's relentless midfield.

The Arsenal wide man got the ball across but it looked a poor one until Robertson could only hack it into Lacazette.

The Gunners striker then scuffed the ball into the ground but it bounced up over Alisson and Mikel Arteta's men were in front.

Not for long, though.

Just three minutes later, Mo Salah whizzed past Kieran Tierney and fired one at Bernd Leno.

Robertson puts Liverpool ahead with his side's second goal

The Arsenal keeper tamely pushed the ball across his own goal and Mane was on hand to tap home into an empty net.

Liverpool's midfield were just not allowing the Gunners to get out of their own half. Even without the injured Thiago and captain Jordan Henderson they were brilliant.

The second goal started with good work from Roberto Firmino and Salah on the right before the ball was laid off to Alexander-Arnold.

He was given an age to set himself before he put in a deep cross.

Robertson ghosted in at the back post with Hector Bellerin not tracking him and he controlled the ball before lifting it past Leno with a finish a striker would be proud of.

Jota got his first Liverpool goal at the end of the game

He had also more than made up for his earlier error as the Reds had overturned their deficit within nine minutes.

It was a patient and professional performance from Liverpool as they didn't give Arteta's side the chance to breathe on the ball enough to threaten them.

Lacazette did get a chance after the break.

A superb ball from Dani Ceballos put him in again but this time Alisson pulled off a good save even if it was straight at him.

Arteta's approach certainly deserves credit to continually play out from the back against the Reds pressing machine.

But, by doing so, it was risky.

Liverpool extended their impressive winning run at Anfield

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Alisson was an injury doubt before but he was vital again here as he rushed out to deny Nicolas Pepe getting to another good Ceballos through ball.

Then Jota came off the bench for his first Premier League appearance in red and he fired home from the edge of the area late on after controlling a poor clearance.

And it ensured Arsenal's winless run at a top-six side dating back to a January 2015 victory over Manchester City was extended to 28 games.

LIVERPOOL (4-3-3): Alisson 6; Alexander-Arnold 8, Gomez 7, Van Dijk 7, Robertson 7; Keita 7 (Milner 79), Fabinho 8, Wijnaldum 7; Salah 7, Firmino 7 (Minamino 90), Mane 8 (Jota 79). Subs: Adrian, Jones, Origi, Williams.

ARSENAL (4-3-3): Leno 5; Bellerin 6, Holding 5, Luiz 6, Tierney 7; Elneny 6, Xhaka 6 (Ceballos 60, 6), Maitland-Niles 7; Willian 6 (Pepe 68, 6), Lacazette 7 (Nketiah 74) , Aubameyang 6. Subs: Runarsson, Gabriel, Kolasinac, Saka.

Referee: Craig Pawson 6.