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.
The incident happened with the game evenly poised at 0-0 but the Baggies made sure the early misfortune did not damage their survival bid as they ran out comfortable 3-0 winners.
The result – thanks to goals from Matheus Pereira, Matt Phillips and Callum Robinson – means Sam Allardyce’s side have recorded back-to-back league wins for the first time this season and are now eight points from safety with seven games remaining.