Murray scores winner off knee, with initial suspicion of handball
Sako had levelled for Palace after Stephens' opener
First competitive club match in England with VAR (Video Assistant Referee) technology in use
#bbcfootball or text 81111 (UK only)
Noel Fitzpatrick: The VAR is long overdue. Remember, we can only minimise errors, never eliminate them, so the system shouldn't be attacked even if in the end it doesn't give the "right" decision.
Brighton v Crystal Palace (19:45 GMT)
Rob Nothman
BBC Sport
Image source, BBC SportThe press room is brimming over with journalists here - not for the romance of the FA Cup but for 21st century technology. What sort of English debut will VAR have? Will it overshadow Brighton and Crystal Palace’s attempts to reach the fourth round. It’s live on 5-Live Sport from 7.45.
Brighton v Crystal Palace (19:45 GMT)
Brighton & Hove Albion
Count the changes - 12 in all.
Brighton make eight as they clearly focus on their league campaign. Tim Krul starts in goal and Tomer Hemed starts up front.
Palace rest Christian Benteke and Wilfried Zaha but make just four changes - it looks like Bakary Sako will start up front on his own.
Full line-ups to come.
Michael Flynn is dreaming of a trip to Anfield in the fourth round of the FA Cup after Newport County stunned Leeds.
Gaetano Berardi's deflected opener put Leeds ahead, but Shawn McCoulsky's 89th minute header and Conor Shaughnessy's own goal put Newport into round four for the first time since 1978-79.
"I would love Liverpool at Anfield; that would be the dream for me being a Liverpool fan," said manager Flynn.
We'll find out soon...
From 19:10 GMT
Image source, Getty ImagesYeovil beat Bradford 2-0 on Saturday to move into round four
Yeovil, 21st in League Two, are the lowest-ranked side left in the competition and the chairman will surely be hoping for a trip to Old Trafford for the ££££££££££.
Fourth round ties will take place across the weekend of 26-29 January, with winning clubs receiving £90,000 from the Emirates FA Cup prize fund.
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The rehearsal a bit earlier on pulled this rabbit out of the hat...
From 19:10 GMT
Who's ready for a cup draw?Yes please!
The draw for round four, or the last 32 as it's not usually known, will happen before tonight's game. You can watch it right here at the top of the page and I'll bring you all of the ties.
Image source, Getty ImagesThe full list of numbers for the draw is here. , external
Here's a choice handful:
4. Liverpool
8. Coventry City
9. Newport County
15. Manchester United
23. Manchester City
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Will Beaman: Come on the Palace! We have to win tonight otherwise life will be hell living in West Sussex!!
Brighton v Crystal Palace (19:45 GMT)
The Palace players have arrived at the Amex and are surveying the scene - it's a misty, freezing evening by the look of it.
Brighton v Crystal Palace (19:45 GMT)
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Brighton v Crystal Palace (19:45 GMT)
Image source, Getty ImagesLet's try and explain...
Toinght's referee Andre Marriner will have an assistant (Neil Swarbrick) watching the game on television in the Premier League's west London studio, and they will be able to use between 12 and 15 camera angles - plus four cameras in each goal - to try to ensure the right decision is made.
In theory, it should cut out mistakes such as the one referee Mike Dean admitted he made in awarding West Brom the late penalty from which they equalised in the 1-1 draw with Arsenal.
But, as anyone who watches cricket or rugby league will tell you, just because you can replay an incident on a screen, it does not make the decision beyond debate.
Brighton v Crystal Palace (19:45 GMT)
Image source, Getty ImagesVideo Assistant Referees - a bold new world for English football.
Tonight's game at the Amex sees a video assistant referee (VAR) used for the first time in a competitive club match as Brighton host Crystal Palace in the FA Cup third round.
Image source, Getty ImagesWe are bound to get zero controversy now aren't we?
Image source, Getty ImagesWe shall debate the rights and wrongs, the hows and whys, the pros and cons as we enter a video world...