RESULT: Wrexham 3-3 Sheff Utd
RESULT: Brighton 2-1 Liverpool
RESULT: Stoke City 3-1 Stevenage
Lewis Baker
Stevenage defender Jonathan Tomkinson is deemed to have brought down Jacob Brown, with a sliding challenge and Lewis Baker steps up to hammer home Stoke's third from the penalty spot.
FT: Brighton 2-1 Liverpool
Liverpool
Strong words from Andy Robertson in an interview with ITV.
The defender says Liverpool have been "nowhere good enough" this season. "It's so disappointing," he adds.
"It's bitterly disappointing. It's hard to take."
Wrexham v Sheff Utd (16:30 GMT)
Wrexham name the same starting XI that won 3-0 at Gateshead in the National League earlier this week.
Wrexham XI: Howard, Forde, Hayden, Tozer, Tunnicliffe, McFadzean, Lee, Young, O'Connor, Mullin, Palmer.
Subs: Cannon, Lainton, Hall-Johnson, McAlinden, Dalby, Lennon, Bickerstaff, James Jones, Cleworth.
Image source, @WrexhamAFCSheffield United make five changes to the side that started the 1-0 win at Hull in the Championship nine days ago.
Adam Davies starts in goal, while Oli McBurnie partners Daniel Jebbison in attack. Chris Basham, Ben Osborn and James McAtee are also all recalled for the Blades.
Sheff Utd XI: Davies, Ahmedhodzic, Egan, Basham, Bogle, McAtee, Norwood, Doyle, Osborn, Jebbison, McBurnie.
Subs: Sharp, Lowe, Coulibaly, Foderingham, Robinson, Ndiaye, Sachdev, Marsh.
Image source, @SheffieldUnitedOne game down. One going on as we speak. And another still to come. Team news from Wrexham v Sheffield United is coming right up.
Josh Laurent
Absolute screamer from 25 yards. What a way to hit back for the hosts.
Laurent reclaims Stoke's lead with 'magnificent goal'
FT Brighton 2-1 Liverpool
Brighton & Hove Albion
Brighton's Lewis Dunk on ITV: "Sometimes you have to win a game like that. We weren't great today but managed to grind it out against a top side. They are top players and top strikers, especially after the win 15 days ago when we were very good and beat them.
"We knew they wanted to come back but we dug in. We feel like we can beat anyone on our best days and we showed here we can do it on our not so good days. We just need to keep pushing on."
On Kaoru Mitoma: "It's nice to have him in our side, I'm glad I'm not chasing him. He's a top player and he's come out of nowhere. We are lucky to have him in our team and hopefully we can keep him. We'll take it game by game."
On his goal: "Of course I didn't [mean it], it just hit me but I needed one like that it has been a while."
FA Cup
Chelsea, Arsenal and Liverpool have won the FA Cup 30 times between them. None of those clubs will feature in the draw for the fifth round.
A reminder that the draw for the fifth round - the last 16 - takes place live on The One Show on BBC One on Monday from 19:00 GMT.
Teams definitely through so far:
Manchester City
Leeds United
Leicester City
Bristol City
Southampton
Tottenham Hotspur
Manchester United
Brighton
Jamie Reid
Oh my. Shades of offside around this one but Jamie Reid has repeated his trick from Villa Park by knocking in an equaliser for Stevenage.
Image source, PA MediaFT: Brighton 2-1 Liverpool
Brighton & Hove Albion
Lewis Dunk has been speaking to ITV. He says Brighton didn't play particularly well and that his goal was fortunate as he didn't mean it.
On Kaoru Mitoma: "I'm glad he's on our side. I wouldn't fancy having to chase him."
On whether Brighton can reach the FA Cup final: "We will see."
FT: Brighton 2-1 Liverpool
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Stoke 1-0 Stevenage
Stoke still looking in very good shape. Stevenage have not really found a way to put any pressure on the hosts and until a moment ago had not managed a shot on target in this contest.
There are just under 25 minutes left for the League Two high flyers to try and find a way back into this.
Still anyone remember what happened at Villa Park?
FT: Brighton 2-1 Liverpool
The good news for Liverpool is they don't have to play Brighton again this season. Who would have thought the Seagulls would cause the Reds so many problems? Thoroughly deserved.
FT: Brighton 2-1 Liverpool
Terry Butcher
Ex-England captain on BBC Radio 5 Live
A sensational game. I couldn't have believed it would be this good.
It's had the lot; skill, ability and some dodgy tackling.
Brighton are a credit to their club and their fans today.
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Sho PS: £4.9m for Mitoma from J1 side Kawasaki Frontale. Brighton's scouting network is unreal.
Peter Malathssss: Mitoma... out here making Joe Gomes look like a Sunday league defender. Man is a Liverpool nemesis.
What a brilliant goal.
Brighton 2-1 Liverpool
All over!
BRIGHTON HAVE BEATEN THE HOLDERS.
Liverpool's season suffers another setback. This is going to hurt.
Brighton 2-1 Liverpool
Brighton eat up more seconds by sending on Jan Paul van Hecke.
They're seconds away from beating Liverpool for the second time in 15 days.
Brighton 2-1 Liverpool
Jurgen Klopp looks stunned.
Brighton 2-1 Liverpool
Terry Butcher
Ex-England captain on BBC Radio 5 Live
A goal fitting to win a cup tie like this.
A free kick to the far post, Estupinian does well to put it back across goal and then it's a great finish from Mitoma.
It's a sumptuous finish. What a winner!
Brighton 2-1 Liverpool
Brighton fans are pinching themselves.
Sixth in the Premier League and now they're moments away from knocking holders Liverpool out of the FA Cup.