Stoke netted three times in the second half to defeat West Brom 3-0 and extend their winning run in the Barclays Premier League.
Matthew Etherington's penalty put the visitors 1-0 up in the 55th minute after referee Chris Foy adjudged Scott Carson to have fouled Kenwyne Jones.
Substitute Jon Walters converted another spot-kick with five minutes of normal time remaining and then bagged his second in time added on as the Potters secured their third successive victory.
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