Alan Kennedy
Former Liverpool left-back on BBC Radio Merseyside

Roberto Firmino is the one that plays everyone into the game. He has been terrific today and he looks like he is enjoying every minute he plays. He's a crucial player for Liverpool at the minute.

Image source, Getty Images

Georginio Wijnaldum gets a rousing reception as he is replaced by James Milner as Liverpool make their first change of the game.

David "hands" Luiz is at it again, this time pulling back Mo Salah as he powers forward in pursuit of a hat-trick. The whistle goes and Luiz looks around a little nervously. Fortunately for the Arsenal defender the offside flag was up for Salah.

Ash Williams: Emery thought buying David Luiz would solve their defensive issues. He’s cost them twice in 10 minutes.

David: Another howler by Luiz. Arsenal would be better off playing with 10 men.

Arsenal just have not been in it this half. Unai Emery tries to shake things up with a change as Lucas Torreira replaces Dani Ceballos.

Image source, BBC Sport

Who's catching your eye? Rate the players here.

"Mo Salah, Mo Salah, running down the wing" reverberates around Anfield. No doubting who the man of the moment is. He has been sensational in this game.

Alan Kennedy
Former Liverpool left-back on BBC Radio Merseyside

What a goal. That is absolute magic. Another wonder goal. You don't see these types of players very often. That guy is someone very special. He did everything right. It really was a wonderful strike.

Alan Kennedy
Former Liverpool left-back on BBC Radio Merseyside

Liverpool are going for the jugular. Arsenal are continuing to defend well. As long as they keep doing that, they will be fine. This could still be anyone's game. Liverpool are showing very good quality in their side. They are pushing Arsenal back. They have good discipline. They are in such a form.

Liverpool are playing with real confidence now whereas Arsenal look nervous. The visitors pass the ball nonchalantly around the back, despite Liverpool's forwards in close attendance and it is no surprise the Gunners ultimately lose possession before Mo Salah plants a header just over the bar from Andy Robertson's cross.

Pierre-Emerick Aubameyang breaks the offside trap and is through on goal but Joel Matip gets back quickly to stab the ball from under the Arsenal striker's feet.

Peter Malath: "Allow me to reintroduce myself, I am Daivd Luiz, here is your penalty, give me my yellow card."

Ilyas Najib: Frank Lampard will be smiling even more after that Luiz error.

Fahad Khan: Arsenal already searching the David Luiz receipt hoping for a refund.

Phil McNulty
BBC Sport chief football writer at Anfield

Madness from David Luiz - and that is where he can be a liability. He might as well have walked over to Arsenal manager Unai Emery and ripped up all his second half plans in front of him. Pathetic.

Liverpool can sense a wounded animal now and they are on the hunt for more goals. They play some lovely one-touch football on the edge of the Arsenal area before Mo Salah shoots but his effort is blocked.

Alan Kennedy
Former Liverpool left-back on BBC Radio Merseyside

I thought he was pulled back. It was a lovely move to put Salah in. He would have been on goal but he was pulled back. That was a clear penalty from here. The referee was only five yards away. Had to be a penalty.

Dreadful start to the second half for Arsenal as David Luiz pulls Mo Salah's shirt inside the area and Liverpool have a penalty.

Yule: Pepe will make a solid partnership with Laca once he settles in the EPL.

Phill Burns: Pepe will cause issues 2nd half. Arsenal to win from behind.

Shan: If Pepe improves his finishing, he can be our new Henry; otherwise he will be another Gervinho.

Back under way at Anfield. No changes for either side.