Rio Ferdinand and Joe Cole were left baffled by West Ham appearing to be denied a penalty against Manchester United.
The ball appeared to strike the arm of Victor Lindelof inside the United box towards the end of the first half, with the West Ham players immediately pleading with referee Peter Bankes to award a penalty.
Stuart Attwell, on VAR duty for the game, also came in for heavy criticism for his failure to intervene.
Speculatively putting the ball back into a dangerous area after it fell to him, Benrahma's volleyed cross hit the Sweden international's arm as he tried to stop it reaching Michail Antonio.