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Daniel James needed to be a bit braver here.

He has the speed to latch on to a long ball over the Arsenal defence but sees Bernd Leno closing in on him and prods a tentative effort straight at the German goalkeeper.

Great save from Sunderland keeper Lee Burge to deny Yoann Barbet from the edge of the box.

Glenn Murray
Former Brighton striker on BBC Radio 5 live sports extra

If anything he caught it too well, it was so true. A little bit of bend and he'd have had it in the back of the net.

Ooooh, not far off!

Kai Havertz cuts it from the left before letting fly with a low effort that fizzes just wide of the far post.

Close.

It's taken 15 minutes but Leeds finally manage to get their noses into the Leeds box and earn a corner when Tyler Roberts' cross is blocked.

From the delivery, Pascal Struijk's header is catching practice for Bernd Leno.

As Glenn Murray says that Chelsea suddenly have a four on two break. Marcos Alonso has the ball on the edge of the area but he gets it trapped under his feet and Southampton get players back to eventually block the shot.

Chance for Sunderland as Dan Neil surges forward and has a crack but QPR keeper Seny Dieng denies him.

Glenn Murray
Former Brighton striker on BBC Radio 5 live sports extra

Both teams are trying to play football really nicely this evening. Now Southampton look the team on top and they are giving it a good go.

Arsenal want a penalty when they feel Diego Llorente catches Ainsley Maitland-Niles from behind, but it looks like the Leeds defender gets a touch on the ball.

And it was outside the box.

But apart from that they think it's a stonewall spot-kick.

Anyway, referee Andre Mariner doesn't agree and waves play on, with forgotten man Sead Kolasinac's drive at the near post kept out by the legs of Illan Meslier.

Ten minutes in and Southampton have their first attacking opportunity with a corner but Stuart Armstrong's delivery is headed away by Trevoh Chalobah.

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First dart in behind the Arsenal defence for Daniel James but the Welsh speedster goes a second too early and is flagged offside.

A tougher one now for Fraser Forster as he does well to claw away a Saul Niguez header from a corner.

All Chelsea at the moment.

Eddie Nketiah will be looking to impress tonight, he has barely got anywhere near the first team this season.

The England youth international looks to catch Illan Meslier out at the near post but pulls his shot wide.

A first save of the night for Fraser Forster and it is a comfortable one as Callum Hudson-Odoi fires in a low effort from distance following a Chelsea free kick.

Lee Dixon
Former Arsenal and England defender on BBC Radio 5 Live

Arsenal have started on the front foot. They've started really well.

Nicolas Pepe wins an early corner which Cedric Soares swings in but Tyler Roberts manages to hook clear.

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Lots of empty seats at the Emirates, the Carabao Cup not tickling their tastebuds.

It's the travelling Leeds fans making all the noise at the moment with a rendition of "Marching on Together".

Glenn Murray
Former Brighton striker on BBC Radio 5 live sports extra

I think Southampton definitely come in as underdogs, especially with the nine changes.

Chelsea will look to keep that juggernaut going, keep ticking over.

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Under way in Tuesday's three Carabao Cup games.

A place in the quarter-finals is up for grabs now.

Glenn Whelan
Ex-Republic of Ireland midfielder on BBC Radio 5 Live

I think Tuchel has put a strong team out, as strong a team as he's willing to put out.

This is business as usual for Chelsea tonight. They've gone out at this stage in four of the last six seasons, they won't want to slip up again.