Also see: 
The top 3 halfpipe runs from the 2014 Burton US Open
Mark Mcmorris wins the Burton US Open for the second year running, Sandbech takes 2nd
Jamie Anderson tops 2014 Burton US Open women’s slopestyle podium

From Burton Snowboards via YouTube:

Men’s and women’s slopestyle went off in Vail, Colorado, for the 2014 Burton US Open presented by MINI. A little snow and flat light couldn’t keep these riders down, as they showed what they were made of with run after run of hammers. Whether it was the grip of triple corks being solidly thrown by the men, or the smooth spins of the women, both slopestyle events showed why the US Open is one of the best contests of the year. Mark McMorris fended off some tough challenges from Stale Sandbech and Maxence Parrot with a solid run wrapping up with one of the biggest triple corks to date. On the women’s side, Jamie Anderson continued her win streak coming off Sochi with one of the smoothest runs of the day, putting some distance between her and the rest of the pack.