Naby Keita is left unmarked agaiin and he drifts into the box. His shot isn't too far over the bar.

James Milner has moved over to right-back and he's conceded a free-kick here.

Ismaila Sarr has moved over to the left, presumably to give Milner a few things to think about.

The free-kick bounces around dangerously in the box but there's blocks from Joel Matip and Milner before the flag goes up.

A few early touches from both Liverpool players as it's worked out from the back via Kostas Tsimikas.

He goes long for Roberto Firmino and Alex Oxlade-Chamberlain backs him up to block a clearance.

Del Day: Would have been more beneficial for our players to sit in stand and watch this. Tbf it’d be the same result! Pathetic Watford.

Peter Campbell: Salah is quite simply one of the world's best footballers. He just oozes class.

Ismail Patel: That Salah goal is probably better than the one scored against Man City

On comes Kostas Tsimikas and Alex Oxlade-Chamberlain for Liverpool.

Andy Robertson and Trent Alexander-Arnold are off.

Jurgen Klopp is already looking ahead to Atletico Madrid in the Champions League.

Trent Alexander-Arnold almost adds a fifth when his low shot is heavily deflected inches past the keeper's left post by Danny Rose.

He jogs over to take another corner, which is headed clear by Moussa Sissoko.

Jeremy Ngakia is on for Kiko Femenia for Watford as Sadio Mane fires one over the bar from outside the box.

Trent Alexander-Arnold fizzes a diagonal pass over to Andy Robertson. He almost slides it through to Roberto Firmino but it's a little too short.

Josh Earl: Wow. Absolutely phenomenal from Salah. Love him or loathe him, you can't deny his brilliance.

Bigg Ben: Salah just gave me chills with that goal

James Hammond: Mo Salah is the best player in the world right now. No debate.

Glenn Murray
Former Brighton striker on BBC Radio 5Live

Unbelievable from Salah, he twisted and turned. Watford players were in a heap and he just strokes it in the net with that left foot as we've seen so many times.

Image source, Getty Images

Simon Stone
BBC Sport at Vicarage Road

Watford just had a shot.

It was from outside the box and went straight to Caoimhin Kelleher but it was enough to bring the home fans to their feet in sheer joy.

It's a long way back from here.

A first save for Caoimhin Kelleher and it's a simple one.

Juraj Kucka hits it from long range and it's straight at the Liverpool keeper.

There were complaints from Watford on that goal. Craig Cathcart knew Mohamed Salah was behind him when he made the sliding touch.

Salah was miles away from the ball in an offside position but his presence arguably led to the goal.

A chance for Watford here...

Juan Hernandez is away down the left, he has Ismaila Sarr in the middle but he can't pick him out.

Matt Crocker: If Watford were to have a bounce every time they got a new manager, then they would be near the top of the league.

Andrew Hodkin: Ranieri hasn’t so much hit the ground running as hit the ground digging.

Ben Foster's goal kick isn't great and it's straight to Liverpool. Mohamed Salah can't quite bring it under control and Foster apologises to his defence.