Image source, Reuters

You can say what you like about Chelsea's line-up and the changes Liam Rosenior has made, but Wrexham deserve huge credit. Phil Parkinson's side have started superbly and are excellent value for their lead as half-time approaches.

Chris Sutton
Former Chelsea striker on BBC Radio 5 Sports Extra

It is a bit of a surprise to me that Liam Rosenior has made as many changes as he has done - especially on the back of a very good performance against Aston Villa. Why not carry on the momentum?

Now his Chelsea team are chasing the game.

Nizaar Kinsella
BBC Sport Chelsea reporter

Image source, Getty Images

Chelsea have not escaped the consequences of making nine changes and have been poor against Wrexham.

They left Cole Palmer, Moises Caicedo and Enzo Fernandez at home, but Joao Pedro, Reece James and Marc Cucurella are on the bench and may come on as early as half-time if this continues.

Chelsea simply cannot create anything with five central defenders and two defensive midfielders on the pitch, and it is putting them under pressure.

Alejandro Garnacho's advance down the left flank is halted as Wrexham continue to successfully double-up on - and increasingly frustrate - Chelsea's wingers.

Alan Shearer
Former England striker on BBC One

Arthur Okonkwo had to time it to perfection and he read it really well.

Brave goalkeeping from Wrexham's Arthur Okonkwo as he races out and smothers the ball with Chelsea looking to carve open the hosts' back line.

Robert Sanchez is then called upon to rescue Chelsea at the other end, getting a firm glove to Lewis O'Brien's deflected shot at the expense of a corner. It's lively!

Waynne Phillips
Former Wrexham midfielder on BBC Radio Cymru

Sam Smith doesn't play every week but he gives everything when he's given the shirt to start. I'm so pleased for him. It would have been easy for Parkinson to go with Kieffer Moore or Nathan Broadhead. He's put his faith in Smith and Smith has delivered.

Image source, Getty Images

Alan Shearer
Former England striker on BBC One

Get your shot away Sam Smith! There is no need for you to come inside onto your right foot.

Sam Smith threatens in behind for Wrexham again, but slips before he can get a shot away as he tries to switch the ball onto his right foot.

Let-off for Chelsea.

It's only 1-0, but all the signs suggest Chelsea are in trouble here.

An off-balance Alejandro Garnacho registers their first attempt but skies his shot off-target.

Wrexham are fired up. Chelsea are barely lukewarm.

Waynne Phillips
Former Wrexham midfielder on BBC Radio Cymru

Image source, Getty Images

Wrexham's tactics have been great. They knew before start that Chelsea would see a lot of the ball - they knew that what they did without the ball would be important and they've done it very well so far.

Nizaar Kinsella
BBC Sport Chelsea reporter

It has taken Chelsea 22 minutes to register an attacking action of any kind, Jorrel Hato's wayward cross into the arms of goalkeeper Arthur Okonkwo. Alejandro Garnacho has had one touch in the opposition box. That's literally all Chelsea have offered thus far.

Very good, Ken.

Image source, Getty Images

Alan Shearer
Former England striker on BBC One

George Dobson whips it into Max Cleworth, who gets the touch, but he is just offside.

Robert Sanchez is forced into a save following an excellent cross by George Dobson, but the flag is up for offside anyway.

Wrexham are all over the Blues right now!

Nizaar Kinsella
BBC Sport Chelsea reporter

It's going to be a good episode of the 'Welcome to Wrexham' documentary... whatever happens now.

There seemed genuine bemusement in the stands when VAR (video assistant referee) got involved. It's never been seen at the Stok Cae Ras.

Image source, Getty Images

Well, this is set up superbly now!

Chelsea are stunned, while the home fans have managed to turn up the volume even louder.

Romeo Lavia goes into the referee's book for a late challenge as Wrexham continue to feed off the crowd's energy.

Barry Horne
Former Wales and Wrexham midfielder on BBC Radio Wales

Absolutely incredible. Sam Smith has pulled off the perfect run, they've pulled off the perfect forward pass. What a cool calm collected finish. Now we're set up.

Image source, Getty Images