David Moyes questioned the officiating at Selhurst Park after his side were defeated by Crystal Palace on Saturday.
West Ham struck first through Tomas Soucek, but Roy Hodgson's revitalised side struck back with three first-half goals courtesy of Jordan Ayew, Wilfried Zaha, and Jeffrey Schlupp.
After entering the interval with just a one-goal deficit to chase after Michail Antonio headed home from a corner, Palace would again double their advantage after Eberechi Eze was ruled to have been fouled inside the box.
Eze then converted the penalty after the referee pointed to the spot, but after the game expressed his discontent with the Craig Pawson's decision.