Bad omens for the hosts.

Norwich have lost 20 of the past 21 Premier League matches in which they conceded first.

Liverpool win two quick corners. From the second Sadio Mane's flick flies over the bar before Mohamed Salah stings Paulo Gazzaniga's hands.

The hosts are beginning to find a rhythm.

I say great save, it may be one of the greatest saves witnessed.

Tim Krul somehow tips over Anthony Martial's point-blank header.

But...

Richard Browne: Liverpool bossing the game and fans are squawking about a fluke goal being the fault of players?

Much better from United, a lovely, swift move.

Andreas Pereira rides a couple of challenges and finds Marcus Rashford.

The England international plays a one-two with Anthony Martial but his low strike from the angle is kept out by Tim Krul's outstretched leg.

Serge Aurier is down having treatment. It presents Liverpool with an opportunity to get their heads together. This is not the start they wanted.

Aurier is back on his feet after a couple of minutes and able to continue.

Leicester's scoreline v Southampton on Friday could have been under pressure today had Arsenal taken all their chances so far.

Arsenal in again!

This time Pierre-Emerick Aubameyang is slipped a pass through on goal, but he pokes a shot wide from the edge of the box under pressure from Joel Ward closing in.

At last Liverpool show some attacking intent as Andrew Robertson goes round Christian Eriksen but there's no one anticipating the Liverpool defender's pass across the six-yard line. Easily cleared.

United are finding it difficult to get to grips with the runs of effervescent full-back Max Aarons down the right.

Again he has plenty of room but the cross is straight into the grasp of goalkeeper David de Gea.

Paul Walmsley: Henderson loses it far too easily in midfield. Lovren doesn't block properly. The two weak links we Liverpool fans were concerned about before the game.

James Appleton: Klopp must be the only person in Liverpool, apart from the man himself, who thinks Dejan Lovren should be anything but a last resort in a first XI. Poor Joe.

Michael Brown
Former Tottenham and Manchester City midfielder on BBC Radio Manchester

We were wondering where Dele Alli would fit in Tottenham’s midfield. Harry Winks is being a pivot at the moment with Sissoko to the right and Alli to the left. Alli has a real responsible job in this game. Tottenham currently have a really good shape, they are playing really well and it is really important to keep those distances.

Phil McNulty
BBC Sport chief football writer at Emirates Stadium

Arsenal needed a fast start to get the crowd on their side - and it does not come faster or better than two early goals.

Shabby Crystal Palace defending at two corners but Arsenal took full advantage. Very long way back for Crystal Palace from here.

Almost three for Arsenal.

Kieran Tierney sprints down the left and cuts the ball into the box for Alexandre Lacazette.

The Frenchman has so much time in the area, taking a touch, turning and getting a low shot off which Wayne Hennessey dives low to his right to push away.

Good build-up play from United but lacking inventiveness in the final third.

Midfielder Andreas Pereira curls a shot narrowly wide from the edge of the box.

Ten minutes on the clock at Anfield. Liverpool are yet to register a shot while Arsenal are already 2-0 up!

Harry Kane is the third opposition player to score inside 60 seconds at Anfield in a Premier League game after Matt Elliott for Leicester in August 1997 and Olivier Dacourt for Everton in April 1999.