Chris Wise
BBC Final Score reporter at Emirates Stadium

Great penalty into the corner from Saka. Areola went to his left and he went the other way. Arsenal deservedly into a two goal lead.

United send on Patrick Dorgu and Matheus Cunha for Diogo Dalot and goalscorer Mason Mount.

Jurrien Timber is fouled by Malick Diouf and Arsenal have a penalty!

Bruno Fernandes heads the corner out and Trai Hume's volley is well, well, well, well wide.

Granit Xhaka feeds Eliezer Mayenda and he wins a corner off Luke Shaw. That was Sunderland's first proper attack in a while.

This has a similar pattern to the midweek game with Olympiacos - Arsenal are dominating but struggling to get that second goal.

Chris Sutton
Former Premier League Striker on Final Score

That's definitely not a yellow for simulation. I think there was a touch from Fernandes, his knee on the thigh of Traore, but there was contact in there.

It was not a good decision from Lammens there, have they signed another dodgy keeper? United have perhaps got away with one there.

West Ham make a couple of changes as Niclas Fullkrug is replaced by Callum Marshall, who spent last season on loan at League One Huddersfield.

Soungoutou Magassa also heads off with Freddie Potts replacing him.

Will Perry
BBC Final Score reporter at Old Trafford

Long ball forward, Traore gets an excellent touch on the ball to take it through a tight corridor between Lammens and Fernandes and then Traore goes down. He is absolutely adamant that there was a touch but the referee went straight to his pocket for a yellow card.

Sunderland make a triple change. Chemsdine Talbi, Eliezer Mayenda and Brian Brobbey replace Wilson Isidor, Arthur Masuaku and Bertrand Traore.

Nizaar Kinsella
BBC Sport Chelsea reporter

Academy defender Josh Acheampong starts while Alejandro Garnacho, a £40m summer signing from Manchester United, makes his first Premier League start for Chelsea.

Florian Wirtz, Hugo Ekitike and Jeremie Frimpong drop to the bench as Liverpool make changes after back to back defeats.

British transfer record signing Alexander Isak starts up front alongside Cody Gakpo and Mohamed Salah.

Chelsea XI: Sanchez, Gusto, Acheampong, Badiashile, Cucurella, Caicedo, James, Pedro Neto, Fernandez, Garnacho, Joao Pedro

Subs: Jorgensen, Slonina, Hato, Emenalo, Lavia, Buonanotte, Gittens, Estevao Willian, Guiu.

Liverpool XI: Mamardashvili, Bradley, Konate, van Dijk, Kerkez, Mac Allister, Gravenberch, Szoboszlai, Salah, Isak, Gakpo

Subs: Woodman, Gomez, Endo, Robertson, Frimpong, Jones, Ekitike, Chiesa, Wirtz

Wow. Sunderland forward Bertrand Traore goes round goalkeeper Senne Lammens and goes down. But he's booked for diving.

Was outside the box.

Image source, Getty Images

Bruno Fernandes clips a clever free-kick over the Sunderland wall but Leny Yoro can't get proper contact.

Steph Houghton
Former Manchester City and England captain on Final Score

Time for changes. Sunderland have to do something a little bit different if they are to get into this game. Looking at the bench Rigg can make a difference, Mayenda has pace to cause problems, maybe they could do with Brobbey to hold the ball up?

Another foul on Bukayo Saka, this time by Crysencio Summerville and the West Ham man is booked.

Chris Sutton
Former Premier League Striker on Final Score

The game itself, Arsenal are absolutely pummeling West Ham. Of course West Ham could go up the other end a nick one but Arsenal are absolutely dominant.

Leon Osman
Former Everton and England midfielder on BBC Radio 5 Live at Old Trafford

That is exactly what we are talking about winning the ball in their half and playing the ball forward and our first pass not being backwards.

Bukayo Saka is fouled midway inside the West Ham half and Arsenal have a free-kick. Declan Rice sends the ball into the box but the West Ham defence clears.