David: Think Attwell has just sent himself off. Bravo

Alex Howell
Football reporter at Tottenham Hotpsur Stadium

Referee Stuart Attwell has now left the pitch and appears to be having technical difficulties or changing his top, it's hard to see from where we're sat.

What's this? Stuart Attwell is walking off the pitch. Has he decided to substitute himself?

The referee's communication pack looks like it has packed in. Play has been stopped while he has some work done to it.

Chelsea are 20 minutes plus stoppages away from a seventh defeat in 18 Premier League games under Graham Potter.

Before today, they had won one of their past 10 league and cup games.

Paul Robinson
Former Tottenham goalkeeper on BBC Radio 5 Live

That's fantastic anticipation from Forster. He reads it so well and gets out bravely at the feet Havertz.

It's end to end.

How important will that be for Spurs?

Kai Havertz thinks he is through inside the box but Fraser Forster - all 6ft 7ins of him - lunges for the ball and gets it.

Spurs fans are out of their seats to applaud the keeper.

Paul: Does Potter not like Mudryk? Did Chelsea only sign him to stop Arsenal getting him? Either he’s not that good or they’re just a joke with their signings. Or both. All that money spent and no proper proven striker. Awful.

Usman Khalid: New game, same outcome. Thank you Potter for everything, now please leave.

Chelsea are on the charge through Raheem Sterling who tries to thread it through to Kai Havertz but Cristian Romero is there to mop up.

Romero is having a terrific game.

Chelsea have had one attempt on target in 62 minutes.

A roll of the dice from Graham Potter.

On: Mason Mount and Denis Zakaria.

Off: Hakim Ziyech and Ruben Loftus-Cheek.

One hour on the clock. Chelsea are about to make a double change.

There's no confusion about the latest yellow card.

Ben Davies goes into the book for bringing down Ruben Loftus-Cheek.

Plenty of confusion around about what happened with the Hakim Ziyech red card - or non red card.

The VAR hub have now confirmed the the assistant referee advised that there was an arm raised from a player – VAR clarified the identity of Ziyech.

In consultation with the assistant, Stuart Attwell gave a red card. VAR then recommended a review – after which the red card was downgraded as it did not meet the threshold for violent conduct.

Chelsea need to do something and there is movement on the visitors bench. Graham Potter is about to make a change.

Paul Robinson
Former Tottenham goalkeeper on BBC Radio 5 Live

We're in for a really good second half. Chelsea now need to come out and show more intent.

Scoring goals has been their Achilles heel but they need to address that now.

If anything it's Tottenham who look more likely to score the next goal.

There are strong home appeals for a penalty for handball against Kalidou Koulibaly but they are waved away by Stuart Attwell.

Where's Chelsea's equaliser going to come from?

They've only scored 23 on the Premier League stage all season.