Manchester United were the beneficiaries of a poor offside decision at Old Trafford this evening as Felipe Anderson's first-half goal should have stood.
Ten minutes into the game, the Brazilian was on the end of a knock-down from Javier Hernandez and smashed the ball past David De Gea.
The linesman's flag went up and the goal was chalked off but replays quickly showed that it was the incorrect decision, with Diogo Dalot playing Anderson onside.
West Ham had even more reason to feel aggrieved shortly after when referee Graham Scott gave a penalty for Robert Snodgrass' challenge on Juan Mata.
It was the 21st penalty United have been awarded in all competitions this season.