EPL: West Ham 0-3 Burnley
West Ham supporters invaded the pitch at the London Stadium
Chris Wood came off the bench to score twice and assist Ashley Barnes in a 3-0 victory over West Ham amid fan protests.
The New Zealand international's introduction in the second half inspired a comfortable win for Burnley against a backdrop of crowd demonstrations againsts West Ham owners David Sullivan and David Gold.
Burnley had not had a shot on target until the 66th minute when Barnes smashed in the visitors' opener before Wood tapped in a second (70) and capitalised on Joe Hart's error for their third (81).
The result puts Burnley three points clear in seventh and places further pressure on sixth-placed Arsenal. West Ham, meanwhile, drop down to 16th after their third successive defeat.
West Ham were in full control during the opening 45 minutes as Burnley failed to test Joe Hart's goal. The host's first goalscoring opportunity came to Marko Arnautovic in the 12th minute - breaking free into the box - but his low drive from a tight angle was stopped by the feet of goalkeeper Nick Pope.
Joao Mario fired his volley towards an open goal over the bar moments later, and in the 23rd minute, West Ham had a controversial penalty appeal turned down. Aaron Cresswell's cross hit Aaron Lennon's arm at a very close proximity, but referee Lee Mason elected to only award a West Ham corner.
As David Moyes' men continued to push numbers forward, West Ham's next big chance arrived in the 38th minute. Angelo Ogbonna's looping header caught the Burnley backline off-guard before the ball landed to Manuel Lanzini in a one-on-one position, but his low shot was blocked by Pope's left boot.
The second half sparked into life when Sean Dyche elected to bring on Wood on the hour-mark. In the 66th minute, the 26-year-old held the ball on the right flank before he teed up the onrushing Barnes, who smashed his effort first-time into the top corner.
After a group of protesters made their way onto the pitch and beneath the director's box, Burnley scored almost instantly after the restart. Barnes fed the ball to Lennon, who squared he ball across the goal-mouth for Wood to get his first of the game.
Ten minutes before time, Burnley condemned West Ham to a terrible afternoon when Hart spilled Johann Gudmundsson's powerful drive which allowed Wood to capitalise on the opportunity to get his second of the afternoon. And as the game drew to a close, Trevor Brooking cut a lonely figure in the director's box as Gold and Sullivan left early.