Swansea: Fabianski, Rangel, Mawson, Taylor, Barrow , Britton, Fulton, Sigurdsson, Routledge, Llorente
Subs: Van der Hoorn, Fer, Nordfeldt, Montero (for Barrow 77'), Cork, Naughton, McBurnie (for Llorente 84')
Sunderland: Pickford, Jones, Djilobodji, Kone, Van Aanholt, Larsson, Denayer, Ndong, Pienaar , Anichebe, Defoe
Subs: Mannone, Borini, Khazri, O'Shea, Manquillo (for Pienaar 85'), Kirchhoff (for Ndong 57'), Januzaj (for Larsson 55')
Fernando Llorente handed Sunderland a brutal reality check as the Wearsiders surrendered 3-0 away at Swansea City.
Llorente's two second half strikes condemned the Black Cats to a damning one sided defeat after a Gylfi Sigurdsson opener.
The Welsh side were dominant in the second half after an uneventful scrappy first 45 minutes. They never looked back after Sigurdsson converted a 51st minute penalty.
It was Sigurdsson's low driven corner that was guided in by the former World Cup winner three minutes later to seal the contest.
The Spaniard added insult to injury with his rising header ten minutes from time, crashing substitue Jefferson Montero's hung up cross into the top corner.
David Moyes' Sunderland once again find themselves rock bottom of the Premier League, Swansea being the side they displaced who climb out of the relegation zone.
Swansea arguably edged a scrappy first half in which neither side consistently showed any real footballing quality.
Late on the Wearsiders lack of discipline and inability to retain possession allowed the Welsh side the conjure the best chances of the half.
The Black Cats best moment of the stanza arrived on twenty minutes when Jermain Defoe skied over after good work one on one with Alfie Mawson.
His driven shot across Lukasz Fabianski's goal was always rising over but represented a decent chance for the red hot marksman.
Moments later Billy Jones's decision to square the ball to Defoe rather than shoot wasted another good opportunity. The full back was in behind the Swan's defence but passed into traffic rather than shooting at close range. Defoe was crowded out and the opportunity was wasted.
The remainder of the half was all Swansea's. Poor challenges in midfield from Sunderland allowed Gylfi Sigurdsson to display his excellent quality.
The Icelander first teed up Mawson who headed over from the Icelanders outstanding in-swinging free kick. Another dangerous free kick from the 27 year old saw Jordi Amat head over from point blank range. The centre half was unmarked and should have converted inside the Black Cats area.
Swansea were supreme in the second half and scored soon after Defoe dragged a low shot wide from 18 yards out, when the England international might have driven at the Swansea defence.
Wayne Routledge won Swansea's spot kick dinking the ball onto Jason Denayer's outstretched arms, as the Belgain was wildly trying to close distance.
Sigurdsson converted calmly, waiting for Jordan Pickford to dive to his right before chipping straight down the middle.
His low corner was helped past Pickford by Llorente soon after, and following a quick second Sunderland looked well beaten.
At 2-0 Swansea played with real confidence and a shell shocked Sunderland could have been three down within an hour twice. Llorente fell over six yards out, running onto an inviting Modou Barrow cut back. Amat also would have made it three but for an outstanding Pickford save, palming the 24 year old's glancing header wide from another excellent Sigurdsson free kick.
Swansea eventually sat back but Sunderland showed no real quality or ability to get back into the game. Substitute Adnan Januzaj misplaced two passes poorly in the final, third while Patrick van Aanholt wasted great crossing opportunities.
Insult was added to injury ten minutes from time when Llorente headed in from close range. This game was a reminder of the lack of quality and ability in this Sunderland squad. Moyes created this mess after a chaotic pre-season and recent improvements and results can't mask the fact this one of the most sorry looking outfits in the Premier League.