There are few things more frustrating than conceding a goal that should not have stood.
It is the basic element of the game that ultimately decides whether your team deserved to lose.
But sometimes mistakes happen and decisions go against you.
Arsenal profited from a generous refereeing decision on their way to a 13th FA Cup triumph over Chelsea, after an offside Aaron Ramsey interfered with play, prior to Alexis Sanchez scoring.
And in light of yesterday’s controversy, we decided to look through the archives and compile a list of controversial goals that should NOT have stood.