Well in! Jack Stephens steams into a tackle on the halfway line, the home crowd who are here enjoyed that. The Saints have won one game at home all season - and that was against Asenal.

Former Peterborough striker Jack Marriott almost gets on the end of a through ball but Angus Gunn sweeps it away, before at the other end Shane Long almost meets a good cross from Tyreke Johnson.

Image source, Reuters

Both sides have started brightly, Saints youngster Tyreke Johnson gets clear on the left but his early cross is well charged down.

On the radio Alistair Bruce-Ball estimates that the attendance tonight may be close to 10,000...

Image source, Reuters

Jermaine Jenas
Former England and Tottenham midfielder on BBC One

Harry Wilson's very confident on the ball and he's happy to step up and take free-kicks, as we saw at Old Trafford earlier in the season.

He's got an eye for a goal, he's a good talent and he's their leading scorer. A night like tonight, he'll be looking forward to it because Derby have missed him the last few games.

Derby attack swiftly on the break, Harry Wilson feeds a ball into the run of Martyn Waghorn and he hits a nice early shot but it's always at Angus Gunn. Easy save for Gunn - who was absolutely outstanding against Chelsea the other week.

Alan Shearer
Former England captain on BBC One

I've got huge respect for Frank Lampard for going into management. We need to continue to do that with players who are just retiring, to keep their experience in the game. I hope he does well.

Straight away Southampton press Derby as they try and play out from the back and Richard Keogh is almost caught out, the Derby skipper rather panics and hacks it away.

Away we go!

Southampton: Gunn, Cedric, Stephens, Vestergaard, Ramsey, Romeu, Ward-Prowse, Elyounoussi, Armstrong, Johnson, Long. Subs: McCarthy, Redmond, Gallagher, Targett, Bednarek, Slattery, Barnes.

Derby: Roos, Bogle, Keogh, Tomori, Malone, Bryson, Huddlestone, Mount, Waghorn, Marriott, Wilson. Subs: Carson, Lawrence, Evans, Bennett, Holmes, Lowe, Nugent.

Referee: Anthony Taylor (Cheshire)

Jermaine Jenas
Former England and Tottenham midfielder on BBC One

What Leeds have done is wrong, simple as that. But in terms of punishment, those players are there (in the table) on merit, they've played brilliantly all year, so should they be punished on what the manager's been up to? It doesn't feel right.

Here they come!

A reminder that the winners go to Accrington in round four. And a reminder that you can watch the match at the top of the page.

One of the stands behind the goal is totally empty. Frank Lampard signs a few autographs down by the dugouts.

Image source, AFP

Alan Shearer
Former England captain on BBC One

It's very open and honest from Marcelo Bielsa. Watching teams on the sly is nothing new to football. When I was playing in European games and you trained in the stadium the night before we were almost certain someone from the opposition was watching.

I'd practice penalties and put them to one side and the night after, if we got a penalty, I'd put it to the other side. It's slightly different, it's slightly off, when it's not an open training session and no-one can watch it.

It's one thing when there's no privacy and everyone can watch it, but Derby County's training ground is enclosed. You can't go in when you're not invited and take the information from that.

Harry Wilson, Derby's number seven, has scored a few absolutely superb free-kicks this season. A wand of a left foot.

Anthony: Excited to watch Mason Mount and Harry Wilson in this FA Cup replay, first time I'm seeing them live extensively.. two exciting players.

Alan Shearer says that after he had his spell managing Newcastle he would have loved to have another go - but thinks that he's been out too long now!

Image source, Getty Images

BBC Radio 5 live

If my words don't float your boat, or you can't see the match on BBC One/above, you can also listen to full match commentary from 5 live tonight.

Just press play above to hear Ali Bruce-Ball and former Manchester City midfielder Michael Brown.

Southampton

Southampton manager Ralph Hasenhuttl to BBC Sport: "We are well prepared for this game, we have a few youngsters on the pitch and it is a good chance to see them. I am looking forward to this game.

"I am very pleased so far. We took some important points but it is still a very close situation. We have made some good steps but we need more steps.

"We will go as far as posible but there is no doubt that the focus is on the Premier League - to stay in the league is more important for the club."

Alan Shearer
Former England captain on BBC One

It's been an immediate impact for Ralph Hasenhuttl. I've heard the Southampton players saying they now have a better understanding of the game with him - both with and without the ball.

There are either an awful lot of people huddling in the concourse to stay warm - or this is not going to be a big crowd...

Fancy a flavour of the FA Cup yourself?

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Andy Cousen: Have Southampton asked Bielsa for his Spy Report for tonight's game?