Baggies dominate first half but fail to break deadlock as Potters steal it in the last minute after mistake from Tamas and calamitous Foster.
The home side had the better of the first half and went close through Chris Brunt and Paul Scharner but neither was able to beat Asmir Begovic. The second half was a much more even affair but neither goalkeeper had a shot to save as both sides looked to have settled for a hard-earned point until Shotton popped up to embarrass Ben Foster and seal the win.
The deadlock was finally broken in the last minute of normal time as a mix up between Gabriel Tamas and Ben Foster gifted a goal to substitute Shotton. Tamas tried to shield a long ball back to his keeper, but as they both hesitated Shotton gambled and nicked the ball off Foster and rolled the ball into the empty net.Nigerian striker Peter Odemwingie suffered a reaction to his ankle injury in the build up to this match and was not risked by West Brom manager Roy Hodgson, so the Baggies were unchanged from the side who were beaten by Chelsea.
Stoke was unchanged from its last league game, with the only difference being the addition of Tom Soares on the subs bench after the midfielder impressed in the team's victory over FC Thun in the Europa League.