The 2009 Rockstar Energy Drink U.S. Open will feature two distinctly different track designs for this year's race inside Las Vegas' MGM Grand Garden Arena, featuring the largest finish line jump in the event's history.The six technical lanes will challenge riders and entertain fans inside the intimate MGM Grand Garden Arena. This year's track will be a combination of the-best-of-the-best obstacles taken from the last nine years of the Rockstar Energy Drink U.S. Open, including the mammoth finish line jump that will span nearly 75 ft."This year's U.S. Open tracks should be two of the best yet," said Dave Prater, director of supercross, Feld Motor Sports. "They're more technical and tighter than the previous year's, which will make it challenging and create great parity. There are still some straight-aways and a flat sweeping turn to allow for speed as well. Both tracks should please the fans and the riders."To view each night's track click the following link: http://www.ussx.com/track09.aspTickets for the 2009 Rockstar Energy Drink U.S. Open are available at Ticketmaster locations, Carter Powersports (located at 6275 South Decatur Blvd. Las Vegas, NV 89118) the MGM Grand Garden Arena box office, www.ussx.com or by phone at (800) 745-3000.