The Burton US Open 2014 Halfpipe Semi-Finals are underway! Women are up first, Shaun White will not be competing, but the field is still packed with talent. Kelly Clark and Kaitlyn Farrington who both got medals in Sochi will be out there battling it out, while in the men's event both Ayumu Hirano and Iouri Podladtchikov are expected to make appearances.

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