Crystal Palace hit four goals in the first 31 minutes as they thrashed sorry West Ham at Selhurst Park.
Michael Olise opened the scoring when he rose highest to convert Joachim Andersen's lofted ball into the box.
Eberechi Eze then netted a superb bicycle kick from close range and Emerson Palmieri turned into his own net under pressure from Daniel Munoz for Palace's third of the afternoon.
Olise turned provider, squaring the ball across goal for Jean-Philippe Mateta to sidefoot home.
Michail Antonio got in behind his man and poked past home goalkeeper Dean Henderson for a Hammers consolation towards the end of the first half.