This is a photo from last year's U.S. Freeskiing Open, where TJ Schiller stomped an unprecedented switch 1440 to keep his claim on the Big Air title, Corey Vanular and Grete Eliassen cleaned up in slopestyle, and Tanner Hall and Sarah Burke held down the top spots in halfpipe. Needless to say, even after changes both in location (Vail to Copper) and organizer (Freeze to Skiing magazine), the U.S. Open is still the world's best venue for competitive park and pipe skiing, and this year should be no different!Registration for the slopestyle and superpipe competitions will open on December 5 at 5:00pm MST at the official U.S. Freesking Open website, and if previous years are any indication, spots are going to fill quick so if you're raring to win at the Open, don't be lazy and be ready to register!Best of luck getting a spot we're looking forward to seeing you there. To check out the action from previous years' Opens, check out our coverage from previous years:2006 Open coverage2005 Open (Big Air, Slopestyle, and Superpipe)