London: Chelsea hopes of retaining the Premier League title suffered a severe blow as West Ham United upset the form book to win the London derby 1-0 on Saturday and give David Moyes his first win as their manager.
Marko Arnautovic's early goal and a gritty rearguard action by the Hammers left third-placed Chelsea 11 points behind leaders Manchester City who face second-placed Manchester United on Sunday.
Tottenham Hotspur returned to form after a run of five league games without a win, thrashing Stoke City 5-1 with Harry Kane scoring twice as Spurs moved back into fifth place.
(Also read: EPL: Antonio Conte says Chelsea no longer in title race after West Ham defeat)
Burnley are level on 28 points with Tottenham and Arsenal after beating 10-man Watford 1-0 at a wintry Turf Moor thanks to Scott Arfield`s goal on the stroke of halftime.
Watford were reduced to 10 men from the 39th minute after Marvin Zeegelaar was shown a straight red for a wild tackle.
Christian Benteke missed a stoppage-time penalty that would have given Crystal Palace victory over Bournemouth but they had to be content with a 2-2 draw as Jermain Defoe scored twice for the visitors at Selhurst Park.
Swansea City climbed off the bottom, above Palace, with a 1-0 home victory over West Bromwich Albion that ended a near two-month run without a victory.
(Also read: EPL: The Manchester Derby - Combined XI)
Victories for West Ham and Swansea mean only six points separate the bottom nine clubs.
Huddersfield Town ended a four-game losing streak with a 2-0 victory over fellow promoted side Brighton and Hove Albion.
Newcastle United host Leicester City later on Saturday.
