Postpublished at 22:26 GMT 16 January 2019
Richard Keogh! To win it for Derby!
Summary
Watch game on BBC One and listen on BBC Radio 5 live
Keogh scores winning spot-kick to set up tie with Accrington in round four
Saints led 2-0 through Armstrong and Redmond strikes
Wilson free-kick reduces the deficit before Waghorn heads in
Derby's Bryson earlier had finish ruled out by VAR for narrow offside call
Postpublished at 22:26 GMT 16 January 2019
SCORES! Southampton 3-4 Derbypublished at 22:26 GMT 16 January 2019
Matt Targett
Oh, just. Saints still alive. For a few seconds longer anyway.
Postpublished at 22:26 GMT 16 January 2019
He's got to score this now...
SCORES! Southampton 2-4 Derbypublished at 22:26 GMT 16 January 2019
Tom Lawrence
Straight down the middle. All on Matt Targett now...
SCORES! Southampton 2-3 Derbypublished at 22:25 GMT 16 January 2019
Jannik Vestergaard
The defender keeps his side in touch. Good finish, low and to the keeper's right.
SCORES! Southampton 1-3 Derbypublished at 22:24 GMT 16 January 2019
Mason Mount
No saving that. Lashed in off the underside of the bar.
MISSED PENALTY! Southampton 1-2 Derbypublished at 22:24 GMT 16 January 2019
Nathan Redmond
The first red cross. It is a shocker as well. Very wide, very high. Advantage County.
Image source, AFPSCORES! Southampton 1-2 Derbypublished at 22:23 GMT 16 January 2019
David Nugent
Nugent follows Ward-Prowse into the bottom corner. Top kicks so far.
SCORES! Southampton 1-1 Derbypublished at 22:23 GMT 16 January 2019
James Ward-Prowse
Different type of finish - low and to the keeper's right - but equally good. Level.
SCORES! Southampton 0-1 Derbypublished at 22:22 GMT 16 January 2019
Martyn Waghorn
No messing about. High and above the diving hand of the keeper. Quality start.
Postpublished at 22:21 GMT 16 January 2019
Derby to go first...
Postpublished at 22:21 GMT 16 January 2019
Here we go then! I'll reset the scores to 0-0 for these...
Postpublished at 22:20 GMT 16 January 2019
Shay Given, on the coaching staff at Derby now, has a quiet word with Rams keeper Kelle Roos.
'Try and save a few mate.'
Watch: 'Excellent block' - Roos denies Redmond a second goalpublished at 22:19 GMT 16 January 2019
This was a great chance to win it...
In total we had 32 efforts on goal tonight.
Postpublished at 22:18 GMT 16 January 2019
Still we don't know who will play Accrington Stanley.
FULL-TIMEpublished at 22:17 GMT 16 January 2019
Southampton 2-2 Derby
PENALTIES!
Postpublished at 22:16 GMT 16 January 2019
John Bennett
BBC World ServiceDo not deprive us of a penalty shoot out now! Stop attacking!
Postpublished at 22:15 GMT 16 January 2019
Southampton 2-2 Derby
Danny Murphy
Former Liverpool and England midfielder on BBC OneStraight to sudden death for the pens, yeah?!
PENALTY APPEALpublished at 117 mins
Southampton 2-2 Derby
Bit of a scruffy challenge as a cross comes in, Southampton get a corner but the home fans want a penalty.
Referee Anthony Taylor goes to VAR - no dice.
Postpublished at 22:13 GMT 16 January 2019
Southampton 2-2 Derby
Danny Murphy
Former Liverpool and England midfielder on BBC OneThere's a lot of talk about people not caring about the FA Cup. I think both sides deserve great credit for the effort they've put into this tie.