West Ham boss Avram Grant urged his side to keep fighting after they slipped towards relegation by losing 2-1 to Aston Villa.
The Hammers had taken the lead inside two minutes with a strike from Robbie Keane but Villa wrestled back control with Darren Bent's header shortly before the interval.
West Ham goalkeeper Robert Green pulled off a string of top-class saves to keep his side in the game but Villa snatched a deserved victory with a header from substitute Gabriel Agbonlahor in added time.
The result leaves the Hammers in the relegation zone - two points adrift of 17th-placed Wigan.
"I think we need nine points more or less to stay in the league," said Grant. "We don't have any intention to give up. We will fight. We have won against big teams this season so we can do it. We will fight.
"It was very important for us but we lost it. It was very crucial, it was the reason the players were nervous. Sometimes they gave the ball away cheaply. We need to look forward. I believe it is difficult but I still believe it is possible [to stay in the Premiership]."