Christian Haller. Photo: Frode Christian Haller tops an all-Swiss podium at the O’Neill Evolution 2011 Halfpipe finals and Kelly Clark takes victory in the women’s final. WHERE : Davos, Switzerland WHEN :   January 2 – 8, 2011 WHAT :    MEN – Halfpipe 6Star, Slopestyle 6Star WOMEN – Halfpipe 6Star, Slopestyle 6Star Davos, Switzerland.

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Christian Haller and Kelly Clark win O’Neill Evolution 2011 Halfpipe finals