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Crawley are sixth in League Two, Leeds are 12th in the Premier League
Crawley's best FA Cup run saw them reach round five in 2011-12
They have beat Torquay United and AFC Wimbledon to reach this stage
Leeds won their only FA Cup in 1972
Timo Werner (44 mins)
A first goal in two months for Timo Werner and it's a simple tap-in as Frank Lampard's summer signings click into gear.
Hakim Ziyech wiorks some some space for a cross, Kai Havertz heads it back and Werner tucks home.
Man City 3-0 Birmingham City
Stephen Warnock
Ex-Leeds and Liverpool defender on BBC TV
Kevin de Bruyne is going to get his own highlights reel tonight - he is just sensational.
Just keep giving him the ball please - I just want to keep watching him play those balls that nobody else on the pitch sees.
Image source, Getty ImagesBarnsley 0-0 Tranmere
Big chance for the League Two side and it's the legs of Brad Collins that denies them.
Kaiyne Woolery shows great strength down the right to escape his marker, his cross finds top scorer James Vaughan 10 yards out but his low shot is brilliantly saved by the Barnsley keeper.
Crawley Town 0-0 Leeds United
Best chance of the game so far!
Tom Nichols gets up superbly to meet a dangerous delivery from a Crawley corner and engineers a header on target, but Kiko Casilla flies across his goal to keep it out.
Great save.
Chelsea 1-0 Morecambe
Mark Schwarzer
Former Middlesbrough & Fulham keeper on BBC TV
Chelsea have gone with a very strong side and you'd expect them to have had more chances than they have
When they quicken the pace of their attacks they look dangerous but Morecambe have more than held their own so far.
Man City 3-0 Birmingham City
Stephen Warnock
Ex-Leeds and Liverpool defender on BBC TV
I don't know how many times I am going to say this today but Kevin de Bruyne's passing is absolutely sensational.
I don't think Gabriel Jesus' shot was going in though.
Man City 3-0 Birmingham City
Kevin de Bruyne has been awesome today. His passing has been incredible.
Birmingham City can't get near him and he keeps on finding the run of team-mates through the opposition defence.
Somehow, Pep Guardiola isn't too happy on the touchline and continues to bark orders at his players. He wants more!
Chelsea 1-0 Morecambe
Chelsea have had 88% possession in this first half and they do lead.
It's the same number of shots on target though for both sides.
Two.
Crawley Town 0-0 Leeds United
Rodrigo gets a sight of goal from the edge of the box, shifting the ball on to his left foot and striking over. Leeds haven't had too many opportunities to get shots away.
#bbcfootball or text 81111 (UK only)
Yes it's only Birmingham, but especially on the back of the Chelsea and Utd games City are looking ominous just now. Liverpool, watch out.
Dan
Man City 3-0 Birmingham City
Stephen Warnock
Ex-Leeds and Liverpool defender on BBC TV
That goal was all about the first touch from Phil Foden - it set it exactly where he wanted it and he just fired it into the far corner.
The goalkeeper doesn't stand a chance, because he's not able to set himself.
It is brilliant from Phil Foden.
Image source, Getty ImagesChelsea 1-0 Morecambe
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Chelsea 1-0 Morecambe
Crawley Town 0-0 Leeds United
Ooof. Ezgjan Alioski takes a ball right in the face from close range and doesn't look too impressed - he's back up on his feet. That one no doubt hurt on a chilly afternoon.
Barnsley 0-0 Tranmere
So close for Barnsley again.
Dominik Frieser gets space down the left and whips in a cross. Cauley Woodrow times his run perfectly to nip in front of his marker but his header flashes past the post.
Crawley Town 0-0 Leeds United
Martin Keown
Former Arsenal defender on BBC One
Crawley have got to be a little more patient when they get into the final third.
Phil Foden (33 mins)
A well deserved goal for Phil Foden.
Riyad Mahrez knocks the ball into the path of Foden just outside the box. He takes one touch to set the ball on his left foot, before firing a low strike into the bottom right corner.
Manchester City are in the mood and this really could be any score.
Barnsley 0-0 Tranmere
Off the line!
Cauley Woodrow escapes the attentions of George Ray and beats Tranmere keeper Scott Davies to the ball.
He hooks it across to Dominik Frieser but the Austrian can't get much on his shot and Ray recovers to clear it away from under his own crossbar.
Man City 2-0 Birmingham City
Stop whatever you're doing and watch this finish by Bernardo Silva.
Cheltenham 0-1 Mansfield
Cheltenham are pressing for an equaliser against Mansfield but both Alfie May and George Lloyd have had attempts blocked as Mansfield put bodies on the line to protect their slender advantage.
The hosts had appeals for a penalty waved away after the ball struck the outstretched arm of a defender, which could have gone either way.