Jean-Philippe Mateta scored twice to condemn West Ham boss Graham Potter to a first Premier League defeat as Crystal Palace won 2-0.
The French striker made it four goals in his last three matches as Oliver Glasner’s Eagles secured back-to-back away victories.
The Hammers also had defender Konstantinos Mavropanos sent off towards the end of a miserable afternoon for Potter.
England head coach Thomas Tuchel was in attendance at the London Stadium, casting his eye over Palace pair Eberechi Eze and Marc Guehi among others.
After a scrappy first half, it took Palace just two minutes of the second half to take the lead through Mateta’s 10th goal of the season.
Lacroix cleared the ball from his own penalty…