Watford win a swift corner after some neat play inside the Wolves area. Both sides attacking the ends where their own fans are housed in this first period. John Ruddy punches the cross away.

Straight from kick-off Wolves go close! They move the ball out to the left at speed and wing-back Jonny shapes in a shot on his right foot, curling and dipping just over the bar.

Image source, Getty Images

Away we go!

Image source, Reuters

BBC Radio 5 Live

Everton have beaten Arsenal - so it's full steam ahead on 5 live for the FA Cup semi-final now.

Tune in at the top.

Here come the sides! Wembley looks and sounds superb. Let's hope they serve up a classic to match.

Chris Sutton
Ex-Chelsea striker on BBC Radio 5 Live

They're two great stories of this season. They're two teams who I think have really over-achieved.

It's impossible to call this one, it's a 50-50 game. Wolves have so many top players at their disposal - Ruben Neves, Joao Moutinho.

Moutinho is the key man really. I saw an interview with Ryan Bennett, talking about Moutinho's influence in the Wolves dressing room.

The key figure for Watford is Troy Deeney. What a match-up that's going to be against Wolves' big back three. I can't call it, but I think there'll be goals.

And here's the Watford end too...

Wolves and Watford fans may have created the best atmosphere I've seen at Wembley in...years.

And the game hasn't even started yet.

Ian Wright
Former Arsenal striker on BBC Radio 5 Live

Raul Jimenez stays as a number nine whereas Diogo Jota is all around him with his sharp, quick movement. He causes problems with his intricate play. He's a really good player and has an eye for a goal.

Conor Coady loves playing that diagonal ball from the back, then you've got Matt Doherty coming up on the right-hand side.

I'm still surprised they don't play as much through their midfield with the midfield they've got in Neves, Moutinho and Dendoncker, so there's two ways they can play.

They can do the counter-attacking or if they want to play through the midfield they can do that as well.

The huge Wolves tifo is already up and running at Wembley. It looks class.

Image source, Getty Images

Another way of putting that is that Wolves haven't won the FA Cup since Domino's Pizza was founded, To Kill A Mockingbird was published, or The Flinstones premiered on US TV.

Did you know? Wolves are on course to become the first club to win the FA Cup in three different centuries. The Black Country club are four-time winners - 1893, 1908, 1949 and 1960.

Ian Wright
Former Arsenal striker on BBC Radio 5 Live

What's good with this game is that it's two teams that should be challenging for this trophy. You want to see them in a final like this.

The fans will be desperate to win it and they've got players for whom this is the next step - to win something.

It's so finely balanced. It's interesting because are Wolves going to go through their midfield or let Watford come onto them. But I'd go for Wolves today.

I've not had it 100% confirmed that this is the reason why Ryan Bennett is on the bench. But I reckon it played a part...

Watford make just two changes to the team that beat Fulham 4-1 in Tuesday's Premier League match.

Heurelho Gomes comes back in goal ahead of Ben Foster, while Andre Gray is rewarded for his winning goal in the quarter-final with a start.

Gerard Deulofeu is the man to drop to the bench.

Watford XI: Gomes, Femenia, Mariappa, Cathcart, Holebas, Doucoure, Capoue, Hughes, Pereyra, Gray, Deeney

Image source, BBC Sport

There are three changes to the Wolves side that beat Manchester United 2-1 in the Premier League on Tuesday.

Keeper John Ruddy - who has started every FA Cup tie so far this season - returns to replace Rui Patricio in goal.

Defenders Ryan Bennett and Ruben Vinagre drop to the bench, while Jonny and Romain Saiss come into the side.

Wolves XI: Ruddy, Jonny, Coady, Boly, Doherty, Dendoncker, Neves, Joao Moutinho, Saiss, Jimenez, Jota

Image source, BBC Sport

Raul Jimenez's family are in.

Image source, Getty Images

Guy Mowbray
Match of the Day commentator

All the indications are for a tight tie, with little to separate the Premier League's two next-best teams outside the 'big six'.

One point - the difference between them, in Wolves' favour.

One goal - again pointing to Wolves, with a goal difference of +1 to Watford's zero.

One minute - made the difference at Molineux in October, with Watford's goals in a 2-0 win scored just 58 seconds apart.

One yellow card - Watford have totalled 62 league bookings to Wolves' 61, with even the number of fouls committed across the whole season incredibly close (358 Watford, 353 Wolves).

One goal to split them then? Or maybe one missed penalty in a shoot-out?!*

*Watford have lost their last three, and Wolves their last four. Vive la difference!

Raul Jimenez has scored in three rounds of the FA Cup this season, a record bettered only by the five of Newport County's Padraig Amond.

Josh Earl: Looking forward to what I expect to be a great game of football, between 2 teams that play 2 upfront, quite a rarity in the modern game!

Phil McNulty
BBC Sport chief football writer at Wembley

Image source, Getty Images

This is a cascade of colour - Wembley awash with yellow and old gold.

The first semi-final between Brighton and Manchester City was a low-key affair with plenty of empty seats in the City section.

This will be a packed house, a 50/50 game, and already has the feel of a totally different, more vibrant occasion.