Chelsea 1-3 Southampton: Barclays Premier League as it happened

So, a fourth defeat of the season for a woefully underpar Chelsea side who have now conceded 17 goals in the top-flight already. The word 'crisis' is bandied about far too regularly in the world of modern sport, but it is clear that the champions are in a desperate spot just at the moment and their hopes of retaining the title are surely now completely gone with that 10-point gap to leaders Manchester City.

As you would expect, the majority of the reaction from this result will focus on Mourinho's woes. However, what must not be lost during the widespread inquests is the confident nature of Southampton's impressive display. This was certainly no smash and grab, Koeman's side created more chances and took them with ruthless precision after the break.

That is all from us for now, but stayed tuned for coverage of England's pivotal Rugby World Cup Pool A encounter against Australia at Twickenham. Our football coverage returns tomorrow, with the small matter of a Merseyside derby between Everton and Liverpool as well as Arsenal v Manchester United from the Emirates Stadium and Tottenham's trip to Swansea. Goodnight.

Full-time

Chelsea 1-3 Southampton

Koeman attempting to eat up the clock and preserve the lead as he brings off Mane, who has been a constant menace to Chelsea today, and throws on centre-back Maya Yoshida.

Southampton are unsurprisingly getting men behind the ball as Pedro is crowded out in the penalty area by a swarm of red and white striped shirts. Five minutes of added time to play.

Wasteful from Oscar as he tries to sweep a pass out to Fabregas on the right flank but overhits it and watches as the ball sails harmlessly out of play.

Chelsea dominating possession now but they only have two minutes plus stoppage time to erase the deficit. Saints holding firm.

A clear foul from Pelle on Hazard gives Chelsea a free-kick in an excellent position just right of centre. The striker is booked before Falcao's driven effort is deflected over by the head of Bertrand.

Something of a let-off for Stekelenburg as he fails to hold Remy's cross but Pedro can only shoot wide.

A second substitution from Southampton as Koeman sends on Jay Rodriguez in place of Tadic.

So close to 4-1 as Terry makes an impressive block to deny Tadic after the Southampton midfielder opted to take a touch inside and shoot himself instead of playing in Davis in space to the right.

Ward-Prowse has been cautioned for a shirt pull on Oscar.

Mourinho responds to that goal by hauling off Matic - who himself had only replaced Ramires in the second half - in favour of Remy. Chelsea are in a shambles.

Things go from bad to downright awful for Mourinho as Southampton establish a two-goal lead. Hazard gives the ball away cheaply a few yards into the opposition half and Mane leads a swift breakout.

With Tadic also running to his left, the former Red Bull Salzburg winger elects to play in Pelle to the right and he makes no mistake with a cool finish. This is no less than the Saints deserve, you have to say.

Goal: Chelsea 1-3 Southampton (Graziano Pelle)

A painful one there for Falcao as he cops the force of Mane's studs. 20 minutes remaining at Stamford Bridge.

Tadic flights a good free-kick just wide of Begovic's left-hand post. Terry then has to be alert to repel more danger before Ward-Prowse sends a speculative effort into the gods. It would have to have been quite some strike to go in from there.

Chelsea fans seemingly unhappy with that change as boos can be heard around the stadium. Falcao is very fortunate not to receive a second yellow card for a poorly-timed slide on Mane.

We neglected to mention earlier that Matic had been brought on for Ramires. A second Mourinho change sees Pedro replace Willian.

Woeful from Chelsea as Cahill is caught in possession by Tadic. He then links up well with Pelle before sending a low pass to Mane, who expertly rolls Terry before nutmegging Begovic. The ball deflects off the goalkeeper but still ends up in the back of the net.

Are Chelsea heading for a fourth Premier League defeat of the season?

Goal: Chelsea 1-2 Southampton (Saido Mane)

Another controversial moment and another booking for diving as Falcao knocks the ball around Stekelenburg before going to ground in theatrical fashion. Replays show he was already heading down before the contact when ironically he would almost certainly have been fouled had he remained on his feet for a split-second longer.

Pressure from Chelsea as a corner from Fabregas is cleared. Oscar then sends the ball back into the box towards Falcao, but the former Manchester United loanee is unable to make contact with the header thanks to some strong defending from Bertrand.

Chelsea are cut to ribbons as Mane misses two good chances to give the visitors a second-half lead. Twice teed up by Tadic, the second time after he had left Ivanovic in a twisted heap, he is initially denied by Begovic before having another effort blocked. Ward-Prowse then fires wide.

One change at half-time for Southampton as Ward-Prowse replaces Romeu.

We are back underway in west London. Is a third straight 1-1 draw between these two teams on the cards?

Yet another free-kick goal from Willian gave Chelsea the perfect start, but Southampton have come back into the game well and deservedly levelled through an excellent strike from Davis that owed much to Pelle's fine control.

The Saints arguably could have been awarded two penalties following Ivanovic's shirt pull on Van Dijk and that trip from Ramires on Mane. We should have an exciting second half ahead.

Half-time

Chelsea 1-1 Southampton

Another free-kick in an ideal position for Willian but this time his effort at goal hits the wall and the half-time whistle blows.

That aforementioned pressure pays dividends as Fonte plays a long ball towards Pelle. With Cahill in close attendance, the Italian chests the ball down nicely for Davis who lashes past Begovic on the half-volley with his marker nowhere in sight. Lovely finish.

Goal: Chelsea 1-1 Southampton (Steven Davis)

Mane is certainly Southampton's biggest threat today and he draws Ramires into a clumsy foul near the halfway line. A yellow card for the Chelsea midfielder.

Southampton are applying good pressure now as we head towards half-time. Mane rides a strong challenge from Fabregas before finding the run of Bertrand with a superb, defence-splitting pass.

Thankfully for Chelsea, Begovic makes himself big and smothers the shot.

Cahill gives away a needless free-kick as he wrestles with Graziano Pelle but makes up for his mistake with a vital intervention as Van Dijk tries to head a dangerous delivery across goal.

Begovic then has to be alert to tip the ball over the bar after Mane's cross takes a nick off Ramires.

Referee Madley not at all impressed with Mane. There was definitely contact from Ramires there, but the Senegalese international has now been yellow carded for simulation.

Half an hour gone and Chelsea still lead 1-0. Mane has a penalty shout denied after he falls over the trailing leg of Ramires.

A second caution of the afternoon for Southampton as Ryan Bertrand, also formerly of Chelsea, is angered at not being awarded a free-kick following a bump from Willian and proceeds to trip the Brazilian.

Another shot on target from Chelsea as Oscar receives possession from Fabregas on the left-hand side of the penalty area and curls the ball goalwards. Stekelenburg is equal to it.

Ramires exchanges passes with Fabregas and he finds Hazard after the Belgian drops into space in front of the Saints' back four. He tries his luck with a shot from distance but it lacks power and Stekelenburg can hold.

Good work from Hazard to create space and find Oscar but his effort also lacks composure and fails to trouble anyone other than those sitting in row z.

Hazard then tries to set up Falcao but Fonte gets there first for Southampton.

Southampton put together a good move as Tadic tees up Steven Davis but the latter's shot is wild and flies well over the crossbar.

Sneaky play from Ivanovic as he pulls the shirt of Virgil van Dijk in the penalty area but he is coy enough about it to ensure that the referee cannot see and award a penalty. The Dutch defender is understandably not happy.

For the fourth match in a row, Willian has scored from a free-kick. His curled effort towards the top right-hand corner is wonderfully struck and loops in with Maarten Stekelenburg rooted to the spot. An ideal start for Chelsea.

Goal: Chelsea 1-0 Southampton (Willian)

Just nine minutes in and Romeu has already picked up a yellow card against his former side with a not-so-subtle trip on the rampaging Hazard. Willian to take the free-kick.

An early corner for the away side comes to nothing as Tadic swings his delivery straight into the waiting arms of Asmir Begovic. A touch lower and Jose Fonte would have got his head to that.

A rather quiet opening five minutes with no goalmouth action to speak of just yet.

Referee Robert Madley blows his whistle and we are underway at Stamford Bridge.

Kick-off is now just moments away. 10 points adrift of leaders Manchester City at the start of play, Chelsea know they cannot afford anymore slip-ups if they are to have any chance of bridging that gap and winning their second consecutive title.

Back to the match at hand, last season Chelsea drew 1-1 at home to Southampton in March as an early Costa header was cancelled out by Dusan Tadic's 19th-minute penalty after Matic had fouled Saido Mane.

The first fixture between the two teams ended with the same scoreline thanks to first-half efforts from Mane and Hazard.

It's certainly worth noting that Manchester City went 1-0 behind at home to Newcastle before a quite remarkable and record-breaking run of six goals in 20 minutes - five of which came from Sergio Aguero - blew Steve McClaren's side away.

What a truly memorable afternoon for the talented Argentine, who had found the net just once in the top-flight this season prior to today.

A reminder that Crystal Palace beat West Brom 2-0 in today's early Premier League kick-off courtesy of goals from Yannick Bolasie and Yohan Cabaye. The full-time whistles are blowing around the country in the 3pm games, here are the results:

Aston Villa 0-1 Stoke

Bournemouth 1-1 Watford

Manchester City 6-1 Newcastle

Norwich 1-2 Leicester

Sunderland 2-2 West Ham

Around 40 minutes until kick-off now.

Southampton have scored nine goals in their last two outings against MK Dons and Swansea. Ronald Koeman makes once change this evening, with former Chelsea midfielder Oriol Romeu coming in for James Ward-Prowse.

John Terry captains the hosts once again after replacing Kurt Zouma at centre-back. Eden Hazard also returns, as does Oscar with John Obi Mikel and Pedro dropping to the bench from the team that lost in Portugal. Ramires retains his place alongside Cesc Fabregas in midfield ahead of Nemanja Matic.

Branislav Ivanovic remains at right-back, although Radamel Falcao is chosen to lead the line ahead of Loic Remy as Diego Costa serves the final match of his retrospective three-game ban handed down in the aftermath of his controversial antics in the victory over Arsenal.

Southampton: Stekelenburg, Cédric, Fonte, van Dijk, Bertrand, Romeu, Wanyama, S. Davis, Tadić, Mané, Pellè

Subs: K. Davis, Yoshida, Long, Rodriguez, Martina, Ward-Prowse, Juanmi

Chelsea: Begovic, Ivanovic, Cahill, Terry, Azpilicueta, Ramires, Fabregas, Willian, Oscar, Hazard, Falcao

Subs: Blackman, Zouma, Baba, Matic, Loftus-Cheek, Pedro, Remy

Good afternoon all and welcome to IBTimes UK's live Premier League coverage of Chelsea vs Southampton in the late kick-off at Stamford Bridge.

A midweek Champions League defeat away to former club Porto had Jose Mourinho in a rather sour mood once more after his side had shown signs of recovery from a woeful start to their title defence with three wins in all competitions and a spirited comeback at Newcastle.

Chelsea have already matched their tally of top-flight defeats from the whole of last season (three) with disappointing results against Manchester City, Crystal Palace and Everton as well as shipping 18 goals.

As for Southampton, they have won just two of their seven games so far this season. While the Saints look reasonably good at home, they have not taken three points from any of their last 10 away fixtures and drew their last two 0-0.

They also do not have a good record away at Chelsea, winning just once in their last 13 games against the Blues and not at Stamford Bridge for 13 years.

Stay with us for breaking team news, confirmed line-ups and live updates throughout the evening....