'It's promotion form!' West Brom fans hail derby day success over Blues - VIDEO
Watch delirious Albion fans discuss their derby day win over Birmingham City.
Albion started the game poorly and were soon a goal down after Lukas Jutkiewicz headed home, only for Grady Diangana to level proceedings ahead of the break after firing home Matt Phillips' cross.
Blues found themselves back in front after Harlee Dean scored a header of his own, as Albion looked to be staring at a second defeat of the season.
However, a change of system and an inspired substitution from Slaven Bilic saw Charlie Austin score a wonderful equaliser before the striker headed home the winner to spark wild scenes in the away end.
Watch Albion fans discuss the game, Charlie Austin's goals and more here...