A James Beattie brace helped Stoke beat West Ham 2-1 at the Britannia Stadium and heap more pressure on under-fire boss Gianfranco Zola.
Beattie put the Potters ahead from the spot-kick in the 11th minute - his first goal of the season - after Julien Faubert brought down Matthew Etherington in the box.
But the Hammers were level on 34 minutes when Matthew Upson rose unmarked to head home a Mark Noble corner from the left.
In the second period, Thomas Sorensen had to save twice to deny Alessandro Diamanti before Beattie got the winner in the 69th minute against the run of play.
His goal came after Ricardo Fuller got round Upson on the right and his shot could only be parried by keeper Robert Green, with Beattie then outmuscling Faubert to tap in at the far post.
His strikes ended a run of four Premier League matches, which included successive home defeats to Chelsea and Manchester United, without a win for the Potters.
It was also only their second victory in 14 matches against West Ham, who themselves have not won since the opening day of the season and are only one place off the bottom of the Premier League.
That former Hammers winger Etherington, who left Upton Park in January, should have a major part in the breakthrough was no surprise.
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