Cedric launches the ball into the box, but Courtois comes through a crowd of players to make the claim.
90' +4
G. Cahill gets yellow.
Yellow card Gary Cahill
Cahill brings down Long on the charge down the right flank. Southampton have the opportunity to launch the ball into the box.
90' +2
M. Gabbiadini enters the game and replaces J. Bednarek.
Gabbiadini replaces Bednarek.
90' +1
CHANCE! Sims latches on to a loose ball in the left inside channel. He goes for a strike from a tight angle, but Courtois is able to beat the ball away. The Saints recycle the attack and Sims has another effort blocked by a wall of blue shirts.
90'
There will be five minutes of added time.
89'
Bertrand looks long for the run of Long, but the ball goes straight into the arms of Courtois. Southampton need to up the ante.
88'
SAVE! Hojbjerg latches on to Bertrand's cross from the left and has a free header at goal, but he can only direct his effort at Courtois.
86'
V. Moses enters the game and replaces E. Hazard.
Moses replaces Hazard for the visitors.
83'
J. Sims enters the game and replaces D. Tadić.
Southampton need a spark from somewhere. They deserve at least a point from the match.
Sims replaces Tadic for the home side.
Minute
Description
82'
Willian gets yellow.
Willian fouls Hojbjerg and is cautioned by the referee.
81'
S. Long gets yellow.
Long catches Cedric late and goes into the book.
79'
C. Austin enters the game and replaces J. Ward-Prowse.
Austin replaces Ward-Prowse for the home side.
78'
O. Giroud has scored a goal for Chelsea!
Oriol Romeu gets yellow.
Romeu brings down Alonso on the charge and goes into the book.
GOALLLLLLLLLLLL!!!!! GIROUD COMPLETES THE COMEBACK!!!!! An incredible turnaround St Mary's as Chelsea take the lead. Southampton failed to clear a cross from Hazard out for the box and the loose ball fell perfectly for Giroud in the box. He adjusted his feet perfectly and was able to launch a low strike towards the bottom corner. It flew off his foot and into the back of the net. Heartbreak for the Saints.
77'
Momentum is well in the favour of Chelsea now. Southampton cannot afford to let their hard work come undone.
75'
E. Hazard has scored a goal for Chelsea! Assist by Willian.
GOALLLLLLLLLLLLL!!!!! HAZARD FIRES HOME THE EQUALISER!! Just like that Chelsea are level. The Blues cut the home side open down the left as Willian beats Cedric and fires a low ball into the box. Hazard controls with one touch before hammering a left-footed strike past McCarthy from close range. A composed finish from the Belgian.
Willian creates space for a low cross and his delivery finds Hazard, who fires home.
74'
Chelsea put the pressure on down the left, but Pedro's cross from the left evades Giroud in the middle.
72'
Hoedt fell awkwardly as Giroud scored and required treatment on the pitch. However, he appears to be ok to continue.
70'
O. Giroud has scored a goal for Chelsea! Assist by Marcos Alonso.
Alonso collects on the left and lifts a pinpoint cross into the box for Giroud to attack and score.
GOALLLLLLLLLL!!!!! GIROUD GETS CHELSEA BACK IN THE GAME!!!! The Blues have a response and display a clinical edge in the final third as Giroud heads home. Southampton are caught out by a quickly-taken free-kick, which allows Alonso space and time to lift a cross into the box from the left. Giroud gets between Yoshida and Hoedt to power a header into the bottom giving McCarthy no chance. Game on.
68'
Southampton have shown more desire than their opponents this afternoon. It has been rewarded in the final third where the Saints have looked potent, while the Blues have lacked a clinical edge.
66'
Long and Tadic combine on the break and the latter looks for the run of his team-mate inside. Fabregas guides the ball back to Courtois, who makes the claim. Dean insists that it was not a backpass, despite the claims of the home side.
65'
R. Bertrand gets yellow.
Bertrand shoves Azpilicueta and goes into the book.
64'
E. Hazard gets yellow.
Hazard handles the ball and then has a word to the referee afterwards, earning himself a booking.
62'
Chelsea need a response and Conte has gone to his bench for answers.
61'
Pedro enters the game and replaces D. Zappacosta.
O. Giroud enters the game and replaces Álvaro Morata.
Pedro comes on for Zappacosta.
Morata is replaced by Giroud.
60'
J. Bednarek has scored a goal for Southampton! Assist by J. Ward-Prowse.
Long is brought down on the right flank and it hands Southampton another chance to whip a cross into the box.
GOALLLLLLLLL!!!!!!! BEDNAREK SCORES!!!! Southampton double their lead as the defender converts at the back post. Ward-Prowse sent a beauty of a cross to the back stick and the Pole pulled off his man. In his opening before he was unable to guide his effort towards goal. However, on this occasion he met the cross flush on the volley and Bednarek guided his left-footed effort past Courtois into the net.
Ward-Prowse lifts a brilliant cross into the box and is rewarded as Bednarek converts.
59'
Ward-Prowse angles a cross in from the right flank and Bednarek almost makes contact, but he cannot steer his effort towards goal.
56'
CHANCE! Chelsea pressure on the edge of the box and Willian goes for a strike. His effort travels through a crowd of players and almost beats McCarthy, but the keeper gets down to make the save. He cannot hold it at the first attempt and Hazard almost pounces on the rebound, only to see the offside flag raised.
55'
SAVE! Hazard weaves his way into the final third and goes for the low strike towards the near post, which is beaten behind by McCarthy.
54'
SAVE! COURTOIS DENIES LONG! A simple long ball forward catches Chelsea out at the back as Long breaks through on goal. He slips in the box as Christensen gets back at him. However, the forward turns and slips again as he shoots on his left foot. Long's effort almost loops over Courtois, but the Belgian claws it from behind him over the bar. A brilliant save from the keeper.
52'
Chelsea have seen a lot of the ball in the early stages of the second half, but have not been able to break through the Saints' line of defence.
50'
Morata tries to turn into space on the edge of the Southampton box, but he gets crowded out before he can fire at goal. Chelsea are forced wide, although Alonso is unable to sustain the pressure.
48'
Courtois has to get to a cross from Ward-Prowse ahead of Yoshida and he does enough to make the block before the Blues can clear the danger. Yoshida got ahead of his man, but couldn't force an effort towards goal.
46'
We're back underway at St Mary's.
OVER! Chelsea break into the final third and Morata goes for the strike from distance, but he fires his effort well over the bar.
45' +3
The referee ends the first half.
Kante is penalised for a late challenge on Cedric and that should end the half.
45' +2
Hazard whips a cross in from the right flank and Christensen rises in the middle, only to nod his effort well wide of the post.
45' +1
Willian takes the free-kick, but his low cross is cleared away. Fabregas goes for the strike from distance, only to see his effort deflected narrowly over the bar.
45'
There will be three minutes of added time.
44'
J. Ward-Prowse gets yellow.
Ward-Prowse clatters into Alonso with frustration and goes into the book. It comes seconds after the Chelsea man stuck a boot in on Long in a late challenge and went unpunished.
42'
P. Højbjerg gets yellow.
Ward-Prowse lifts the resulting free-kick into the box and Yoshida makes a late run, but he guides his effort well wide of the target.
Hojbjerg is late on Zappacosta with a challenge in the corner and he goes into the book.
41'
Christensen catches Long late in the air and gives away a free-kick. It follows a tone for the past few minutes, which has seen both teams involved in a couple of loose challenges.
38'
SAVE! The Saints cut open Chelsea at the back before Ward-Prowse goes for the strike from the edge of the box. Courtois gets down well to make the stop before Tadic goes for the rebound, although the winger is offside as he fires at goal.
36'
WIDE! Long breaks on the counter, although he does not have a lot of options. He goes for the strike from distance, firing his effort well wide of the post.
34'
Morata fouls Yoshida in the air on this occasion and does not react well to the referee's decision. He shoves Hojbjerg away as he gets involved and the it forces referee Mike Dean to have a word with the Spaniard.
33'
Morata is brought down in the Southampton half by Yoshida's challenge. The Saints' are starting to get pushed back towards their own goal.
31'
Chelsea are starting to push back after the Saints' early pressure and goal. Southampton lost their advantage to Arsenal last week and cannot afford to do the same here.
29'
McCarthy has to act from Willian's next delivery from the corner as he zips his cross to the back post. The keeper is slightly out of position and has to backpeddle to punch the ball away from the advancing Christensen.
28'
OVER! Willian drills a low ball out to the edge of the box from a corner to Zappacosta. He goes for a drive from distance, but it is deflected over the bar by Ward-Prowse.
27'
WIDE! Kante swings a cross to the back post and Zappacosta edges Bertrand out of position to head across goal. The ball is behind Morata as he attempts to head at goal. The Spaniard gets an effort away, but it drifts harmlessly wide of the post.
26'
Tadic looks to release Long behind the Chelsea defence, but Azpilicueta reacts to the danger and blocks off the forward's run.
23'
Bertrand has space down the left flank again and goes for the low cross, but on this occason the Blues are able to clear their lines.
21'
D. Tadić has scored a goal for Southampton! Assist by R. Bertrand.
Bertrand raids down the left flank and beats Azpilicueta for pace before teeing up Tadic in the box.
GOALLLLLLLLLLL!!!!! TADIC FIRES SOUTHAMPTON AHEAD!! Tadic notches the opening goal, but this goal is about Bertrand. The Southampton skipper surges down the left flank and shows the desire to raid past Azpilicueta in the left inside channel, displaying a great turn of pace. He sends a low cross into the box and Tadic is the first to react to steer his strike into the net.
19'
Willian whips a cross into the box from the set-piece in with pace, but his delivery travels straight through to McCarthy.
18'
Chelsea win a free-kick in a decent position as Romeu brings down Alonso on the left flank.
16'
Willian finds space on the right and he drives a low cross into the box, but McCarthy once again is on hand to make the claim.
15'
Chelsea probe with Hazard and Fabregas after taking a short corner. Fabregas lifts a cross into the box from the right inside channel, but McCarthy makes a comfortable claim.
14'
Morata battles against Yoshida down the flank and wins a corner off the legs of the Southampton defender, although replays show it hit the Chelsea forward last.
13'
Courtois takes a chance at the back with a short pass to Azpilicueta, who is put under immediate pressure. The Spaniard does well to get his clearance away from danger as Long applied the pressure.
10'
BLOCK! Yoshida makes an error that allows Morata to break forward. He offloads back to Hazard, who goes for the strike. Bednarek and Hoedt are both there to make the block to deny Hazard.
9'
Hazard and Morata combine on the edge of the box, but the Spaniard's flick runs away from the Belgian and Willian in the box and out for a goal-kick.
8'
Southampton's press down the left flank forces a mistake from Azpilicueta. Tadic seizes on the loose ball and looks for an option inside, but the Blues have the men back to clear the danger.
6'
Bertrand and Tadic fire crosses into the box from the left flank, but no red and white shirt is able to latch on to the deliveries in the middle. Only Long was in the box for the home side.
4'
McCarthy fires a poor clearance out from the back. Fortunately for the keeper, it travels to Zappacosta, who opts to slide his pass sideways to Fabregas.
3'
The Saints attempt to press Chelsea in possession in the early stages. The home side will need to be energetic throughout the 90 minutes to get a positive result.
1'
We're underway at St Mary's Stadium.
Good afternoon and welcome to the live commentary of the Premier League clash between Southampton and Chelsea at St Mary's Stadium.
Chelsea have been in poor form in the Premier League, losing five out of their last eight matches. Antonio Conte is under huge pressure in his position, which was compounded by his side's inability to finish off West Ham last week, allowing the Hammers to claim a vital point in their relegation battle. The Blues' top four hopes appear to be over and they are in a fight to finish above Arsenal.
The team news has been announced and we'll start with the home side.
SOUTHAMPTON (3-4-3): Alex McCarthy; Jan Bednarek, Wesley Hoedt, Maya Yoshida; Cedric Soares, Oriol Romeu, Pierre-Emile Hojbjerg, Ryan Bertrand; James Ward-Prowse, Dusan Tadic, Shane Long.
Southampton subs: Charlie Austin, Mario Lemina, Sofiane Boufal, Manolo Gabbiadini, Sam McQueen, Josh Sims, Fraser Forster.
CHELSEA (3-4-3): Thibaut Courtois; Cesar Azpilicueta, Gary Cahill, Andreas Christensen; Davide Zappacosta, Cesc Fabregas, N'Golo Kante, Marcos Alonso; Eden Hazard, Willian, Alvaro Morata.
Chelsea subs: Willy Caballero, Ross Barkley, Pedro, Tiemoue Bakayoko, Victor Moses, Olivier Giroud, Emerson.
Chelsea have made two changes from their draw against West Ham. Zappacosta and Christensen come into the fold to replace Moses and Antonio Rudiger respectively, with the latter missing from the gameday squad entirely.
FLASHBACK! Marcos Alonso scored the only goal of the game as Chelsea claimed a narrow win over the Saints at Stamford Bridge in their clash earlier this season.
Time is fast running out for Southampton in their battle against the drop. The Saints have lost their last three matches in the Premier League and remain three points adrift of safety in 18th place. Mark Hughes' men battled well against Arsenal and rallied from behind in the second half. However, Danny Welbeck's late strike condemned them to defeat at the Emirates Stadium. They're in desperate need of a victory this afternoon.
STAT! Southampton have failed to win any of their last eight Premier League home matches, drawing five and losing three of their contests.
Southampton have made one change from their defeat to Arsenal. Jack Stephens' late dismissal against the Gunners rules out of action due to suspension, with Bednarek replacing him in the backline, who makes his Premier League debut. Long continues to lead the line, despite Austin's strike last week.
HALF-TIME: SOUTHAMPTON 1-0 CHELSEA
Southampton hold a 1-0 lead over Chelsea at the break and are showing the fight needed in their battle against the drop. The goal was all about desire from Ryan Bertrand as he surged down the left flank before crossing into the box Dusan Tadic to convert. The Blues have been below-par in the first half, especially in the final third when they've failed to test Alex McCarthy. The visitors were not able to match the intensity from Mark Hughes' men and will need to find a response in the second half.
FULL-TIME: SOUTHAMPTON 2-3 CHELSEA
Heartbreak for Southampton and their bid to remain in the Premier League as Chelsea complete a comeback from two goals down in the second half to claim a 3-2 win at St Mary's Stadium. The Saints appeared to be on course for a vital win in their battle against the drop as goals from Dusan Tadic and Jan Bednarek handed them a two-goal advantage. However, Olivier Giroud sparked a rally from the visitors as he notched a brace along with a strike from Eden Hazard to secure the three points. It's a sickening blow for Mark Hughes' men, who are running out of time to save themselves from relegation.
Thanks for joining our commentary this afternoon. Until next time, goodbye.
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