And Leeds work the set piece well.

A great delivery finds an unmarked Pontus Jansson diving to meet the ball from 12 yards out.

He gets a powerful connection but Jamal Blackman dives to his left to make a one-handed save and paw it away from goal.

We will have five minutes of stoppage time at the end of the first half.

It could well be a bit more, as Alioski has just finished getting treatment. Leeds have a free-kick about 40 yards out.

Sheffield United midfielder Lee Evans goes into the book for a fould on Ezgjan Alioski.

Both players were sliding in to challenge for the ball, and the Macedonian comes off worse clutching his leg.

Replays show the studs were showing from Evans, and he's perhaps lucky to get just a yellow.

In the meantime, Pablo Hernandez is on for the visitors to replace Kemar Roofe.

After a few minutes of trying to continue after that blow to the head, Leeds forward Kemar Roofe is being forced off.

The substitute isn't quite ready yet, so play continues and the Whites have 10 men on the pitch for now.

Leeds are coming back into things.

Kemar Roofe tries to create an opening on the left but fouls Chris Basham by the byline.

The visitors are looking more comfortable than they were a few minutes ago.

Image source, Rex Features

After a bright opening, the scores are level at half-time at Oakwell. Both sides have being going for it.

So far, Oli McBurnie's low finish for Barnsley has cancelled out Atdhe Nuhiu's penalty.

Blades wing-back Enda Stevens is forced to concede a corner under pressure from Ezgjan Alioski.

Leeds work the corner short and Kemar Roofe tries a bicycle kick from the edge of the area.

Alioski can't get on the end of it.

We are back under way, after a stoppage of about three minutes.

Kemar Roofe is back up and walking and looks like he'll be able to continue.

Here's a break in play at Bramall Lane as Kemar Roofe gets some treatment after a clash with Chris Basham.

The Leeds forward took a nasty blow to the head and looks a bit groggy.

Chris Paul: Billy Sharp gets his 200th league goal!! Can he do it in the Championship they asked - yes he can!!

Image source, Rex Features

The hosts are turning up the pressure in search of a second goal.

Leeds right-back Stuart Dallas has to be alert to head the ball on ahead of Leon Clarke, then Pontus Jansson makes a crucial clearance from five yards out.

Billy Sharp's low cross flashes across goal and then Mark Duffy curls a shot just wide.

The Blades are on top, and threatening, with just over 15 minutes left to half-time.

Ezgjan Alioski goes down on the edge of the area under the challenge of Enda Stevens.

There looked like there could have been something in it, but referee Andy Madley doesn't blow.

It was definitely just outside the box, though.

Leeds come close to an equaliser.

Striker Pierre-Michel Lasogga turns and unleashes a fierce effort from 25 yards out.

But the German's shot goes just past Jamal Blackman's left-hand post.

This is a Barnsley side of course who have only won once in all competitions since 4 November, a torrid run.

They could really do with a morale-boosting victory today.

They almost take the lead with a fine effort from Tom Bradshaw, but Joe Wildsmith pulls off a spectacular save.

Leeds are starting to work their way back into the game after that poor start.

But then Kemar Roofe chops down Chris Basham just inside the Blades half as the defender looks to start an attack.

The bookings are starting to mount up, with 20 minutes gone.

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Leeds work the free-kick out to Pontus Jansson, who heads back across goal.

Ezgjan Alioski attempts an ambitious bicycle kick from the edge of the area, but it's straight at home keeper Jamal Blackman, who is back from a groin injury.

The Tykes have had a significant majority of the possession so far at Oakwell, where it remains 1-1 after Oli McBurnie's swift equaliser.

Caretaker boss Paul Harsley will surely be pleased with the heart his player's are showing.

Image source, Rex Features

Goalscorer Billy Sharp goes into the book for a late sliding challenge on halfway on Stuart Dallas, who is playing at right-back for the visitors today.