This live event has finished
- Saints hammered in the FA Cup
- Jay Rodriguez gives Saints the lead on 22 minutes
- Ba (2), Moses, Ivanovic and Lampard penalty in reply for Chelsea
- Jose Fonte stretchered off
Full time - Saints 1 Chelsea 5
GOAL - Saints 1 Chelsea 5 - Frank Lampard pen 83
Lampard tries to lift the ball into the area but it is blocked by Steven Davis. It hits his chest first but bounces on to his arm which is hanging out.
Mike Dean thinks about it and decides it was deliberate and it was inside the area and gives the pentlay.
Boruc dived the wrong way as Lampard drills home.
Tadanari Lee gets on for Puncheon while Oscar replaces Mata for Chelsea
Marin on for Moses for Chelsea.
Boruc makes another save, this time from Lampard's long range drive.
De Ridder sees a shot saved from point blank range by Turnbull before the follow up is deflceted wide.
Up the other end Boruc saves from Ba.
It gets worse for Saints.
Fonte has to be stretchered off after injuring his knee trying to stop Ba.
GOAL - Saints 1 Chelsea 4 - Ba 61
Hazard's ball in is met by Ba getting across Fonte at the far post to flick home his finish.
Saints change with Steve De Ridder replacing Morgan Schneiderlin
GOAL - Saints 1 Chelsea 3 - Branislav Ivanovic 52
It had been coming and Ivanovic powers home a header to put Saints further behind
Chelsea have started the second half strongly.
Saints need to hold on and weather the storm to give themselves a chance to throw everything at Chelsea as the game wears on
The second half is underway
Half time - Saints 1 Chelsea 2
GOAL - Saints 1 Chelsea 2 - Victor Moses 45
With virtually the last kick of the half Moses puts Chelsea ahead.
Cole cuts the ball back from inside the area to Moses who takes one touch to control and another to fire a half volley into the far corner
Moses takes the ball down on his chest and strikes golwards but Boruc saves.
GOAL - Saints 1 Chelsea 1 - Demba Ba 36
Chelsea expose Saints down the right.
Hazard picks out Luiz in the box.
He lifts the ball over Boruc and Ba gets there just ahead of Steven Davis to finish from a yard out.
Saints are working so hard to contain Chelsea.
You could not fault them for effort or work rate.
Hazard curls a right footed shot just wide of the far post
GOAL - Saints 1 Chelsea 0 - Jay Rodriguez 22
Puncheon's superb pass picks out Rodriguez who takes the ball into his stride with the outside of his right boot and then finishes low across Ross Turnbull and into the far corner with the outside of his right boot.
A superbly worked and taken goal.
A break in play is a chance to reflect on a very quiet, but satisfying, start for Saints
Confident start from Saints
As expected both teams are matched up with a 4-2-3-1 formation
The match is under way
The teams are out and almost ready to go
It's going to be an interesting match.
Both teams look pretty strong but with further strength on the bench.
After Chelsea's defeat to QPR you don't fancy that Benitez will want a defeat to Saints but that underdog mentality might just play into the hands of Nigel Adkins and his team.
Just over 20 minutes until kick off now
Demba Ba makes his Chelsea debut.
Saints will be hoping to make it one to forget.
SAINTS: Boruc, Cork, Fonte, Yoshida, Shaw, Schneiderlin, S Davis, Ward-Prowse, Puncheon, Rodriguez, Guly.
Subs: K Davis, Hooiveld, Reeves, De Ridder, Lee, Lambert, Mayuka.
CHELSEA: Turnbull, Azpilicueta, Ivanovic, Cahill, Cole, Ramires, Luiz, Moses, Mata, Hazard, Ba.
Subs: Hilario, Ferreira, Bertrand, Lampard, Oscar, Marin, Torres.
Rickie Lambert is rested for Saints.
Gaston Ramirez is also not risked after suffering a dead leg.
Nor is Nathaniel Clyne after returning to training following an ankle injury.
James Ward-Prowse and Jay Rodriguez come into to the team.
It's a special day for former Chelsea man Jack Cork and he certainly expects to face a strong Blues side.
"I think they'll be out to prove a point," Cork said.
"Some people are convinced they played a weakened side against QPR, but whichever side they put out it's never going to be a weak team so hopefully we could take advantage if they're on the start of a bad run.
"We could look at it either way, but there's not much pressure on us really.
"A cup run would be great and it could help our league form, but the league is our main priority at the minute, and that will be our main focus."
Chelsea are expected to name a strong team today after their defeat by QPR in midweek.
When asked about Rafa Benitez was coy and said: "My strongest team? Maybe it depends for you on the names.
"For me, it depends on the moment of the players, how they feel every game.
"We will try win every competition until the end of the season."
Demba Ba is poised to make his Chelsea debut in today's FA Cup third-round tie at Southampton after completing his move from Newcastle.
Ba could replace Fernando Torres up front, with interim manager Rafael Benitez keen to rest his fellow Spaniard at times during the second half of the season.
Nigeria stars John Obi Mikel and Victor Moses will be available before jetting off to Portugal for a pre-African Nations Cup training camp, but John Terry (knee) and Petr Cech (groin) remain out.
Adam Lallana will again miss out when Southampton face Chelsea in the FA Cup.
The Saints captain is unavailable for the third-round tie with a knee injury, although right-back Nathaniel Clyne could feature at St Mary's after a knee complaint of his own.
Gaston Ramirez is available to feature despite sustaining a dead leg against Arsenal on New Year's Day. Zambia international Emmanuel Mayuka leaves for the African Nations Cup after the game.
Welcome to the Daily Echo’s online coverage of Saints v Chelsea at St Mary’s in the FA Cup third round.
The two teams will meet twice in the next week and a half with another game between the sides scheduled for Wednesday, January 16.
That will be the rearranged Premier League game from December, which was postponed due to Chelsea’s World Club Cup commitments, unless today ends in a draw.
If that is the case then the January 16 fixture will be the replay with the league meeting to be rescheduled again for later in the season.