Chelsea thump Newcastle
Pedro scored twice for Chelsea, while Diego Costa, Willian and Bertrand Traore also punished a wide-open Newcastle defence to leave the north east club back in the bottom three on goal difference below Norwich who drew 2-2 with West Ham United.
Norwich, on a run of five consecutive defeats, led 2-0 with second-half goals from Robbie Brady and Wes Hoolahan but their leaky rearguard buckled again and Dimitri Payet and Mark Noble earned West Ham a point.
West Bromwich Albion eased their relegation fears, winning 1-0 at mid-table Everton, but Bournemouth's 3-1 home defeat by Stoke City left the south coast club in 15th place and four points above third-from-bottom Newcastle United.
Emmanuel Adebayor scored his first goal since joining Crystal Palace but could not prevent a sixth defeat in seven matches for Alan Pardew's side who lost 2-1 at home to Watford.
Attention turns to the title race on Sunday when leaders Leicester City try and consolidate their five-point advantage at third-placed Arsenal before fourth-placed Manchester City host second-placed Tottenham Hotspur.
Premier League results:
Sunderland 2 - 1 Manchester UnitedAFC Bournemouth 1 - 3 Stoke CityCrystal Palace 1 - 2 WatfordEverton 0 - 1 West Bromwich AlbionNorwich City 2 - 2 West Ham UnitedSwansea City 0 - 1 SouthamptonChelsea 5 - 1 Newcastle United