Chambers & Nketiah earn Arsenal 2-0 win v Leeds
Chelsea beat Southampton 4-3 on penalties after 1-1 draw
Sunderland into last eight with shootout win at QPR after 0-0 draw
Quarter-final draw takes place on Saturday
HT: Arsenal 0-0 Leeds
Lee Dixon
Former Arsenal and England defender on BBC Radio 5 Live
It looked like Arsenal were going to be on top from the start, they played really well.
But Leeds, after a sloppy start, have really grown into this.
Their counter-attack football, with James on the one side and Harrison on the other, is threatening Arsenal.
We'll certainly get goals in the second half.
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Paul: Pepe gets more than enough chances and more often than not he’s poor. He has rare games we he plays well or scores but it isn’t often enough. At what point do the chances just stop and Arsenal get rid?
QPR 0-0 Sunderland
Image source, Getty ImagesGoalless at the break in the all-EFL game.
QPR have had 10 shots to Sunderland's three but no breakthrough yet.
Arsenal 0-0 Leeds
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Chelsea 1-0 Southampton
The home side lead thanks to Kai Havertz's goal right before the break.
QPR 0-0 Sunderland
Andre Gray goes close for QPR now but Lee Burge denies him. Closing in on half-time now.
Arsenal 0-0 Leeds
Image source, Getty ImagesGoalless at the break.
Chelsea 1-0 Southampton
Glenn Murray
Former Brighton striker on BBC Radio 5 live sports extra
He just dropped it into the far corner. Fantastic header. I think he has just rescued his half a little bit there.
Arsenal 0-0 Leeds
Lee Dixon
Former Arsenal and England defender on BBC Radio 5 Live
Arsenal have huffed and puffed. They started reasonably well.
But Leeds have got better. They've finished the better in this half.
Arsenal 0-0 Leeds
One minute to half-time, any sign of a breakthrough?
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Jamie: Leeds just can't get that final ball right.
Will Leeds be punished for these missed chances?
Arsenal 0-0 Leeds
Lee Dixon
Former Arsenal and England defender on BBC Radio 5 Live
Marcelo Bielsa will be the happier of the two manager at half-time.
Kai Havertz (44 mins)
Image source, Getty ImagesHe's been the biggest threat all night and now he scores!
Simple stuff really as Kai Havertz rises highest to nod in a header - well placed, right out of Fraser Forster's reach.
The hosts lead just before the break.
Arsenal 0-0 Leeds
But Arsenal do bring their fans onto their feet when Sead Kolasinac's header from eight yards out is headed off the line.
From the follow up, Emile Smith Rowe blazes wide from the edge of the area.
Arsenal 0-0 Leeds
Arsenal fans haven't had much to cheer about so far.
Image source, Getty ImagesChelsea 0-0 Southampton
Glenn Murray
Former Brighton striker on BBC Radio 5 live sports extra
It feels like Chelsea are just sparking into life over the last couple of moments.
Arsenal 0-0 Leeds
Lovely cross into the box from Jack Harrison, inviting for Tyler Roberts but the Wales international can only get his eyebrows onto the flicked effort.
Chelsea 0-0 Southampton
Adam Armstrong finds Che Adams with a great ball through the defence but Kepa is wise to the move and gets to the ball first.
Arsenal 0-0 Leeds
Image source, Getty ImagesSpain international Rodrigo almost gets on the end of a through ball but Bernd Leno is quickly off his line to smother at the Leeds player's feet.
QPR 0-0 Sunderland
Chances for the Championship hosts now. Lyndon Dykes latches onto a misplaced pass in midfield and surges forward but his shot is straight at Lee Burge.
Then Ilias Chair shoots just wide from the edge of the box.