Swansea continuing to play positively despite being in injury time. Jefferson Montero's tenacity earns his team a corner, but the referee blows the whistle before Leon Britton can add his creative spark.
- Kick-off at 15:00 GMT
- Swansea make five changes after 5-0 thrashing by Spurs
- Larsson replaces Watmore for Sunderland
Swansea fans sing Hymns and Arias... serenading their team in what has been an impressive display in a must-win match.
It looks likely that Swansea will end this game with a clean sheet, which will be a boost for a defence which has been under fire of late. The home team keeping possession, spraying the ball around with ease. There will be three minutes of added time.
Leon Britton with a through-ball to Oliver McBurnie, but there's just a tad too much oomph on the pass for the replacement striker. It has been a fine performances from the Swansea captain, however.
Another change for Sunderland. Javier Manquillo replacing Steven Pienaar.
Swansea pressing high, forcing Sunderland to cede possession.
Warm applause for goalscorer Fernando Llorente as he makes way for Oliver McBurnie. The striker has earned his corn this afternoon.
And that, as they say, must be that. Leon Britton wins back the ball in Sunderland's half and the men in white surge forward. The captain frees Jefferson Montero down the left and the substitute's delicate cross presents Fernando Llorente with a simple close-range header.
Swansea camped in the opposition half without troubling Jordan Pickford in the past few minutes.
Swansea by far the better side in this half and are on course for a crucial win. Modou Barrow is replaced by Jefferson Montero with under 15 minutes remaining.
Victor Anichebe wins a free-kick on the edge of the Swansea box. Jay Fulton and Jordi Amat man-handling the Sunderland striker. Is this where momentum swings Sunderland's way? Nope.
Papy Djilobodji with a free-kick into the wall and he lets Swansea off the hook.
Sunderland enjoying possession in the last minute or so. Victor Anichebe allowed to turn on the edge of the box, his cross deflects off a Swansea defender towards Jermain Defoe but the striker's first-time shot on the turn is wide.
Gylfi Sigurdsson pulling the strings, head and shoulders above anyone else on the pitch.
Swansea surging forward once again, but the move breaks down as they near the box. Sunderland attempt a counter-attack, but it comes to nothing.
Swansea oozing confidence but, as we know, confidence is a brittle thing at the bottom end of the table, and there's still 25 minutes to go.
Trickery from Modou Barrow earns his team a corner. Swansea bossing it. Can they inflict what would surely be the killer blow? Gylfi Sigurdsson not as menacing with the dead ball this time, however.
Another brilliant save from Jordan Pickford. Gylfi Sigurdsson with a free-kick which finds Jordi Amat but the defender's header is kept out by the acrobatic Pickford.
A lovely turn from Leon Britton, setting his team forward once again. The diminutive midfielder picks out Gylfi Sigurdsson. The Iceland international with another dreamy cross towards the far post which Modou Barrow side-foots to Fernando Llorente, who is unable to make contact. Had he been able to get a foot on it then it surely would've been Swansea's third of the day.
David Moyes is the first manager to shuffle his pack, and understandably so with his team currently back at the bottom of the table. He brings on Jan Kirchhoff for Didier Ndong.
BBC Sport Wales at the Liberty Stadium
If Gylfi Sigurdsson's goal brought sighs of relief to Swansea City fans, Fernando Llorente's has sent them into raptures.
Sigurdsson had a hand again - he usually does - with a smart, low corner.
And Llorente's finish was equally smart and low. Cue bedlam in the stands.
BBC Sport Wales at the Liberty Stadium
Jason Denayer must hate playing against Welsh sides.
In 2015, the Belgium defender's foul led to the free-kick which allowed Gareth Bale to score the winner for Wales in a Euro 2016 qualifier.
Earlier this summer at the European Championship itself, the Belgian was run ragged by Hal Robson-Kanu as Wales claimed a famous 3-1 quarter-final win.
Now he's conceded a penalty on Welsh soil to gift Swansea what could be a crucial goal in this vital relegation encounter.
How about that? Moments after Modou Barrow goes close, forcing a fine save from Jordan Pickford, the hosts double their lead. Gylfi Sigurdsson is the architect, his canny corner finding Fernando Llorente, who sweeps it home from six yards. The home fans are now in full voice.
As it stands, Swansea move to third-from-bottom while Sunderland drop to the root of the table. But there's plenty of football left to play, as they say.
Straight down the middle from Gylfi Sigurdsson. That could be a very, very important goal in Swansea's fight for Premier League survival.
Jason Denayer is deemed to have handled Wayne Routledge's cross...
The match opening up. Patrick van Aanholt picks out Jermain Defoe, who collects the ball, switches to his right foot and takes a shot which drifts wide of the posts.
Patrick van Aanholt pings a cross over towards Jermain Defoe, but there's too much zip on it and the striker can't control it.
No goals, no shots on target - the second half can only improve, right? Let's find out.
As this graphic illustrating the average positions of each team shows, Swansea had greater attacking intent in the first half. Sunderland were pinned in their own half, but were also content to defend deep.
And that is that. Jermain Defoe with the best chance of the match, but Swansea have enjoyed plenty of possession.
Swansea pressing high, forcing Sunderland to lose possession. Modou Barrow with a shot from distance, which fails to trouble Jordan Pickford.
A corner for Sunderland, their second of the match. Lamine Kone is allowed to rise unchallenged and his header is only a whisker from the target. The referee, however, blows his whistle for a foul.
We're into added time...
Good play in midfield by Leon Britton as he wins the ball, setting his forwards up for a rapid counter-attack. He releases Gylfi Sigurdsson, who gallops onwards before picking out Wayne Routledge. Swansea have four men in attack... but it's a disappointing ball from Routledge to a pink-shirted player. The home fans understandably groan in unison.
Victor Anichebe on the floor, seems to have injured his left thigh in landing awkwardly in attempting to win the ball. The striker doesn't seem too happy, though he does manage to get back on his feet and looks likely to continue.
Another peach of a free-kick from Gylfi Sigurdsson. Jordi Amat makes contact, but his header flies over the crossbar.
Leon Britton in acres of space, but he has no-one to pick out and the only option he has is to pass back. The midfielder raises his arms in despair at his team-mates, pleading with them to make attacking runs.
Wayne Routledge chips a cross into the danger zone and Fernando Llorente is a fraction away from making contact. It's a corner for Swansea, however - their first of the match. Danger? A little. The ball falls to Modou Barrow at the far post, but he swings at fresh air.
A huddle forms among both sets of players as Sunderland's players take grievance against Angel Rangel attempting to toe-poke the ball from underneath Steven Pienaar, who has dived onto the ball as if he were in a ruck. Nothing too serious. No yellow cards, just a free-kick for Sunderland in their own half. Nothing to see here. Move on.
Momentum with Swansea... the hosts monopolising possession... they switch from left to right... Wayne Routledge attempts a cross into the danger zone, but it drifts towards the corner.
Former Everton and Sunderland winger on Final Score
Bob Bradley would have shown them clips of last week, with what they are doing wrong without the ball, because if you are doing things wrong off the ball you are never going to get it back.
He must have showed them the game against Tottenham to get them try and improve on that.
BBC Sport Wales at the Liberty Stadium
There's a sharp intake of breath from the home fans inside the Liberty Stadium whenever Jermain Defoe touches the ball.
The 34-year-old scored a hat-trick when Sunderland won 4-2 here last season, and he's already had a couple of touches inside the Swansea penalty area.
Defoe has yet to find his range but, with eight goals already this season, the England international looks like the visitors' most probable source of a goal.
Gylfi Sigurdsson with a peach of a free-kick towards the far post... Alfie Mawson rises highest, but his header sails over the crossbar. The clearest chance of the match so far.
Swansea keeping hold of the ball nicely until they enter enemy territory and then, more often than not, it unravels. The hosts needing more poise, more composure, in the final third.