Gunners pour more misery on Grant
Avram Grant's reign as West Ham manager looked set to have ended in defeat as Arsenal romped to a convincing 3-0 win at Upton Park.
The Hammers boss was widely expected to lose his job, regardless of the result, with Martin O'Neill ready to step in.
Arsenal showed the Israeli's team no mercy as goals from Robin van Persie and Theo Walcott put them in command at half-time, before the Dutchman wrapped things up with a penalty 13 minutes from time.
West Ham remain bottom of the table, and they fell behind on 13 minutes when Samir Nasri produced a clever step over from Walcott's cross - which Van Persie despatched into the right corner from 12 yards.
There was a let-off for Arsenal when Johan Djourou's backpass was too short and Carlton Cole darted in on goal - but stand-in goalkeeper Wojciech Szczesny made a fine block.
Van Persie went close to making it 2-0 when Arsenal broke quickly through Nasri and his first-time pass into the left of the penalty area was crashed against the base of the upright by the Dutchman.
West Ham were in danger of being overrun and the Gunners doubled their lead five minutes before the break when Van Persie latched onto Cesc Fabregas' ball down the left side of the box.
The Dutchman pulled back from the goalline and Walcott crashed it into the roof of the net.
The game was wrapped up when Wayne Bridge, making his debut on loan from Manchester City, tripped Walcott as the England winger nipped into the penalty area.
Referee Andre Marriner pointed to the spot on 77 minutes and Van Persie slotted the ball into the bottom corner.