And now another change.

Oliver McBurnie replaces Oliver Burke for the hosts.

The ball has been on the pitch for about 30 seconds over the last five minutes.

Expect plenty of time added on for all these stoppages.

And another card. This time Maxime Colin goes into the book, clattering into Rhian Brewster on the halfway line.

And Lee Bowyer makes another change. One debutant off, one on as Ryan Woods is replaced by Juan Castillo.

Blues' Jonathan Leko is also on for Scott Hogan by the way.

He immediately goes into the book for a short pull.

Just under 30,000 inside Bramall Lane this evening.

Are the majority of those going home disappointed?

15 and a bit to go.

Ah, but now Billy Sharp does come on.

John Fleck comes off.

Well there is a sub, but it's for Birmingham not Sheffield United. Tahith Chong comes off, Ivan Sunjic is on.

A very solid debut from the Manchester United loanee.

Mark Stevenson: C'mon Blades get Sharp on

Robbie did most of the dancing. He likes his pop. I usually go straight to the bar.

Twenty minutes to go at Bramall Lane by the way.

Another penalty shout as Tahith Chong and Sander Berge clash in the Birmingham box.

Berge goes to the ground, but the referee again waves play on.

I'm with the ref on this one. I haven't seen anybody hit the floor that easily in Sheffield since my mate Robbie took me to Popworld.

Another obvious yellow as Blues debutant Ryan Woods drags back Sander Berge who looks to start a counter.

Took one for the team.

Image source, Rex Features

Corner comes to nothing.

Handball shout as Blades' John Fleck volleys from range.

The ball strikes Gary Gardner in the box, his arm wasn't by his side...

Referee Tim Robinson says corner kick.

HOW IS IT NOT 2-0!?

It starts with a brilliant cross from the right from Gary Gardner.

First Lukas Jutkiewicz fluffs his header, but no drama as the loose ball falls straight to Blues striker Scott Hogan. The forward though can only hook the ball over the bar from a couple of yards.

A big, big let off for Sheffield United.

David: It does help that Blues tweeted that Kevin Phillips goal earlier today!

Ah. I hadn't realised, thought I'd found a really niche piece of trivia. I'll keep searching for another. Don't worry.

Birmingham right-back Maxime Colin has the ball in the net again but this one will be ruled out.

Tahith Chong puts in a great floated ball after a lovely piece of skill. But Lukas Jutkiewicz clearly pushed United defender Ben Osborn as the cross came in.

The referee blew his whistle before Colin got his head on the ball.

Straight down the other end and David McGoldrick curls one narrowly wide from range.

This game is so open.

What a miss!

Should be 2-0 Birmingham as Lukas Jutkiewicz has a free header in the box.

Jeremie Bela chips in a delightful ball but the big man can't put it away. A shock, nobody's as good in the air in the Championship as Jutkiewicz.

Rhian Brewster has yet to score for Sheffield United.

Will the striker find the target tonight?

At the other end, Blues' Tahith Chong blazes a shot well over after latching onto a loose ball.

Image source, Rex Features

This doesn't look good. Lys Mousset hasn't got up since stretching for that cross.

His night is over and Rhian Brewster comes on.