Half a chance for Brighton as Dan Burn tries to get his head to Aaron Mooy's cross and then Lewis Dunk flicks his forehead at another. The Seagulls keep it alive but can't threaten Dean Henderson's goal.

The home fans are urging their side forward. About 25 minutes for Graham Potter's side to find a leveller.

Goalscorer Oliver McBurnie makes way for Lys Mousset, who doesn't need telling where the net is this season...

Sheffield United have reverted to that deep, defensive shape again. Just soaking up and taking the sting out of a spell of Brighton pressure.

Is that the lifeline Brighton need? Aaron Connolly bursts forward and wins their first corner of the match.

Video Assistant Referee - disallowed for offsidepublished at 55 mins

55 mins

Brighton 0-1 Sheffield United

For the second time today, Sheffield United have a goal ruled out by VAR.

And for the second time, Mat Ryan is very lucky.

Jack O'Connell was definitely offside but the goalkeeper made a right mess of that.

Ben Osborn is coming on early in the second half for Sheffield United with Luke Freeman, who replaced the suspended John Fleck today, making way.

Adam Webster got himself in all sorts of trouble at the back there for Brighton, failing to deal with an awkwardly bouncing ball and that allowed McGoldrick the chance.

The striker did the first bit brilliantly, tip-toeing around the keeper - but that finish...

How's he missed?!

Sheffield United forward David McGoldrick goes round goalkeeper Mat Ryan but, with the goal gaping in front of him, fires left-footed into the side-netting.

What a chance. Should be 2-0.

Leandro Trossard and Pascal Gross are the ones to make way.

Double substitution, in fact - Glenn Murray and Aaron Connolly. The hosts are going for it.

The seagull doesn't get the nod, but Glenn Murray will be coming on for the hosts.

Chris Wise
BBC Radio 5 Live at Amex Stadium

Assured and convincing from Sheffield United so far. McBurnie took his goal really well. Blades have this game right where they want in scoreline and pattern of play. Brighton poor. Possession without any penetration.

Now then, bit of Potter magic needed for the Seagulls in the second half.

Get the lad in the red hat on...

Image source, Getty Images

And that's half time.

Sheffield United looking good value for their lead.

One minute added on... most of the home fans have already disappeared for a half-time snack.

Oliver McBurnie lands awkwardly with lots of pressure on his knee, looks painful but he's back up on his feet - reminded me of that Cristiano Ronaldo header the other day, the way he landed... not sure how his knee didn't buckle. McBurnie looks OK now.

Jack O'Connell rises highest in the box to get his head to the delivery, but he took a ride on a blue and white shirt and that's a foul.

George Baldock, the right wing-back, chases a ball towards the left corner flag to win a throw and from that Sheffield United earn a corner...