The video assistant referee could not reverse an offside decision which cost West Brom a goal against Southampton because officials could not find a definitive camera angle.
Mbaye Diagne thought he had scored when he flicked Darnell Furlong's shot into the net - but it was flagged offside.
Replays suggested it was Kyle Bartley who was offside, rather than Diagne.
However, the VAR could not determine whether Diagne was offside, so the on-field decision remained.
