Get Involvedpublished at 19:34 Greenwich Mean Time 27 January 2018
#bbcfacup or text 81111
Imy Hussain: For 75mil - I wouldn't just want you captain of the ship - I'd want you to be the ship...
Well, that's settled then.
Rodriguez double & Matip OG after Firmino opener
Craig Pawson reviews tug on Salah in box and gives penalty, missed by Firmino
Salah narrows deficit late in second half
In-play clips available to UK users, commentary on Radio 5 live and online
Emma Sanders
#bbcfacup or text 81111
Imy Hussain: For 75mil - I wouldn't just want you captain of the ship - I'd want you to be the ship...
Well, that's settled then.
Liverpool v West Brom (19:45 GMT)
Alan Green
BBC Radio 5 live at Anfield
"Which Liverpool is going to turn up? The way they played so brilliantly against Manchester City or the one that played so abysmal against Swansea.
"It’s probably a little cruel to accuse them of rapid inconsistency but the performance in South Wales would have had the supporters in acute despair.
"Liverpool are maybe helped tonight by the fact that West Brom have been hit by a flu virus - and are probably far more concerned with their Premier League status than staying in the FA Cup."
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Steve Barnard: Great to see Danny Ings on the bench for Liverpool tonight.
Liverpool v West Brom (19:45 GMT)
“The joy of beating Manchester City, followed by the complete frustration of leaving Swansea with no points, really highlights the importance of never letting performance levels drop, even by half-a-per-cent. There is no positive in losing in that manner, but it does present us with an opportunity.”
Fighting talk from Klopp in today's match programme...
Liverpool v West Brom (19:45 GMT)
It's Emre Can who will captain the Reds today and he is one of six players who have worn the armband for Liverpool this month!
Virgil van Dijk's arrival has sparked a debate among supporters as to whether or not he should be given the honour immediately.
Klopp likes to opt for the most experienced but what do you make of it all? Let me know using #bbcfacup
Simon Mignolet, Philippe Coutinho, Jordan Henderson, Dejan Lovren and James Milner have been other choices.
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Jack Gleeson: I feel that Swansea game could be the start of a bad patch. Win tonight please.
The biggest upset of the day.
Watch as Premier League's West Ham went crashing out of the FA Cup thanks to a 2-0 defeat against Wigan.
Liverpool v West Brom (19:45 GMT)
BBC Radio 5 live
Alan Green and Pat Nevin are in position to bring you live updates on Radio 5 live.
You can listen via the link at the top of this page.
#bbcfacup
A goal for Robson-Kanu? A penalty save from Simon Mignolet? An injury-time winner?
What are your predictions for this match? Will it be West Brom or Liverpool who come out on top?
Let me know your thoughts using #bbcfacup
What a win it was for Claude Puel's side this afternoon. Watch as Leicester thrashed Peterborough to book their place in the fifth round.
Newport County 1-1 Tottenham
This game is still going ahead.
Newport County were leading 1-0 against Tottenham for 80 minutes but it's that man - Harry Kane - who has just equalised for Spurs.
A replay would still be a terrific result for League Two Newport!
BBC Radio 5 live
If you missed the scores earlier, here's how the other teams got on in today's FA Cup fourth round matches.
The biggest upset was League One side Wigan's 2-0 victory over West Ham.
The Hammers were the only Premier League side to get knocked out of the competition but Huddersfield Town and Swansea City were forced into replays.
Liverpool v West Brom (19:45 GMT)
Jurgen Klopp has named an extremely strong line-up.
The "terrific three" of Roberto Firmino, Sadio Mane and Mohamed Salah all start and there are returns for full-backs Trent Alexander-Arnold and Alberto Moreno.
Liverpool XI: Mignolet, Alexander-Arnold, Matip, van Dijk, Moreno, Can (c), Wijnaldum, Oxlade-Chamberlain, Mane, Salah, Firmino
Liverpool v West Brom (19:45 GMT)
Alan Pardew makes three changes to the side which drew with Everton in the Premier League as Hal Robson Kanu, Allan Nyom and Jake Livermore come in.
It's still a strong line-up though so suggestions West Brom may not be fully invested in the cup appear to be false.
West Brom XI: Foster; Nyom, Dawson, Evans (c), Gibbs; Rodriguez, Livermore, Barry, Krychowiak, Brunt; Robson-Kanu.
#FAPeoplesCup
It wouldn't be a "shock" if West Brom win this evening but it would be an upset to see Liverpool exit the competition.
Fancy a bit of (potential) upset yourself?
Why not sign up for the FA People's Cup - the nation's most inclusive five-a-side competition.
It's free and there are 18 different categories so something for everybody.
Find up all the details here and give it a go!
Liverpool v West Brom (19:45 GMT)
It's the battle of the two Premier League teams this evening.
Liverpool will go into the game as favourites but if they perform how they did against Swansea on Monday evening, they could suffer another defeat.
Alan Pardew appears to have breathed new life into the West Brom side but they are still battling away in the relegation zone.
Could a successful run in the FA Cup give them a confidence boost?
Liverpool need to bounce back from that awful performance against Swansea...
But West Brom are slowly showing progression under Alan Pardew...
But which Premier League team will progress through to the fifth round of the FA Cup?