Another booking. Rodrigo's trip on Christiansen is pretty innocuous but punished by Kevin Friend, who also gives Alioski a bit of a talking to. Did he say something to the ref? He needs to be careful as he's already been booked.

I was adamant this wouldn't end 0-0 earlier in the game. There are just under 20 minutes for these sides to do something to stop me looking quite the fool.

Antonio Rudiger is now getting in on the chances. He steps forward and fires a shot from range that Meslier has to push away.

Alioski into the boom for cutting across Werner as the German looks to break.

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Roberts does superbly to turn his marker on the touchline and then feed a pass that is intended for Raphinha but gets cut out.

Ayling is back on the pitch after his treatment.

Two changes for Chelsea. On come Timo Werner and Reece James for Christian Pulisic and Hakim Ziyech.

Meanwhile, Luke Ayling is getting treatment on a knee injury, which he picked up after carrying on following a foul. He is walking off for treatment and looks to be OK.

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Leeds with a half-chance as the ball almost breaks Raphinha's way from a Roberts cross.

A corner is the end result, which Kante deals with, with a clearing header. Not far off the smallest man on the pitch.

Jack Harrison is the man making way for Costa. Just before the change, Marcelo Bielsa was irate at something he saw. He immediately called for Costa after that.

Looks like we might be about to see Helder Costa for Leeds. He has been in an out of the side of late without ever fully convincing.

Another Chelsea chance. Leeds are scrambling as the ball is swept from right to left for the charging Chilwell, who has a sight of goal but doesn't have the ball completely under control, forcing him to poke his effort wide.

Leeds win a corner as Raphinha's free-kick is flicked behind by a Chelsea head.

The delivery is half-cleared for Alioski to attempt a soft shot that Chelsea are able to hammer away.

In a flash, the ball is down the other end before a flag halts the attack.

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Chelsea continue to look the more likely to score. They work the ball to Pulisic on the right side of the box but his low shot is straight at Meslier.

Alistair Magowan
BBC Sport at Elland Road

Chelsea turning the screw now, but Thomas Tuchel is sending Callum Hudson-Odoi and Timor Werner to warm up.

Some talent on the Chelsea bench.

IrishMarvelFan: There's nothing good or impressive about Leeds despite what their deluded fans say. They've conceded more goals than Newcastle and Sheffield utd. They've, as it stands, lost 14 games like Newcastle (be 15 and more if they lose this).

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Oh, huge save from Mendy to keep it 0-0.

Roberts gets away down the left and crosses for Rodrigo, whose nod down finds Raphinha for a shot on the turn that Mendy sticks a palm out to save.

Leeds have been under pressure but they could easily be ahead.

A brilliant cross in from Ziyech is aimed towards Havertz but Ayling does really well to get his head to the ball first. Soon after Kante has space in the box for a shot but fluffs his effort.

Leeds under real pressure there, but they weather the storm.

Rodrigo's through ball almost reaches Dallas in the box but is cut out well by Christiansen.

This sets Chelsea up for a period of pressure that ends with a tussle between Pulisic and Alioski. At one point the latter held the hand of the former, but there is no free-kick.

Dallas pulls out a nice Cruyff turn to send two Chelsea men the wrong way before finding Tyler Roberts further forward. He cuts inside but his low shot lacks power and is easily saved by Mendy.

It suddenly opens wide for Havertz to have a go. He is left almost alone in the box to fire a shot that Meslier palms over. Big chance.

The resulting corner clears pretty much everyone and goers out for a Leeds throw.

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It looks like Rodrigo has taken up a deeper position in the early stages of this half. Tyler Roberts has taken up Bamford's pressing forward role.