Photo highlights from last weekend’s U.S. Snowboarding Grand Prix by Sheet Staff in Arts and Life · Sports and Outdoors — 10 Mar, 2011 Photos: Tiffany Henschel Olympian and Mammoth local Greg Bretz flies high and takes home second place. A happy Matt Ladley and his first place trophy. Gretchen Bleiler in last weekend's U.S. Snowboarding Grand Prix. Kelly Clark took flight, and first place for the women in last weekend's Grand Prix. 2011 Women's Winners 2011 Men's Winners The all-girl quartet, Warpaint performed at the official Sprint US Snowboarding Grand Prix after party. The party took place at the Village at Mammoth Share Topics: mammothNewssheetsnowboarding — Sheet Staff This story was written by multiple authors whose names are below the header at the top of the page, or by The Sheet staff.