AURORA, Ill. (August 31, 2007) Suzukis Ricky Carmichael, of Tallahassee, Fla., announced today that he will close out his 2007 farewell season by racing in the 10th Annual Rockstar Energy Drink U.S. Open at Las Vegas MGM Grand Garden Arena October 12-14. Carmichael is the only racer in history to participate at every Rockstar Energy Drink U.S. Open since its inception in 1997.Ricky Carmichael has had a remarkable career that includes five AMA Supercross titles, one FIM World Supercross GP title and three U.S. Open titles, said Todd Jendro, senior director of supercross, Live Nation. As he completes his 2007 farewell tour, its only fitting that his final U.S. appearance will be at the prestigious Rockstar Energy Drink U.S. Open, giving supercross fans one final opportunity to see Carmichael compete in the U.S.Im looking forward to racing the U.S. Open because it is a fun event, said Carmichael. Im happy to be finished with chasing championships and look forward to racing at unique events like the (U.S.) Open. I always look forward to racing in Vegas. I have competed every year at the U.S. Open and want to keep the streak alive. I cant believe that its the 10th Anniversary of the U.S. Open. It seems like just yesterday when I raced at the very first one.Carmichael has won three U.S. Open titles more than any other rider in history and has his sights on an unprecedented fourth title before going into retirement. Carmichael, who is the all-time winningest racer in AMA history with 15 National Championships, earned his last U.S. Open in 2005 when he swept both nights of racing.CBS Sports will once again broadcast a 90-minutes television package of the 10th Annual Rockstar Energy Drink U.S. Open Sunday, October 20, from 1:30-3:00 p.m. EST.More exciting announcements about the Rockstar Energy Drink U.S. Open will be made shortly. Stay tuned to www.ussx.com for more news and information.Tickets are now available for the 10th annual Rockstar Energy Drink U.S. Open at the MGM Grand Garden Arena in Las Vegas October 12-14, 2007 at www.ussx.com, www.ticketmaster.com, by phone at 702-474-4000 or the MGM Grand Garden Arena box office. Regarded as one of off-road motorcyclings premier races, the Rockstar Energy Drink U.S. Open is the final major race of the motocross season. Tickets are available for as low as $20 through Ticketmaster.com. All tickets subject to 5% Las Vegas Entertainment tax.About The Rockstar Energy Drink U.S. OpenThe 10th-annual Rockstar Energy Drink U.S. Open is an invite-only indoor off-road motocross race inside the MGM Grand Garden Arena October 12-14, 2007, featuring the worlds top supercross/motocross racers. Live Nation is the world's largest live music company. Our mission is to inspire passion for live music around the world. We are the largest promoter of live concerts in the world, the second-largest entertainment venue management company and have a rapidly growing online presence. We create superior experiences for artists and fans, regularly producing tours for the biggest superstars in the business, including The Rolling Stones, Barbra Streisand, Madonna, U2 and Coldplay. Globally, we own, operate, have booking rights for and/or have an equity interest in more than 160 venues, including House of Blues music venues and prestigious locations such as The Fillmore in San Francisco, Nikon at Jones Beach in New York and Londons Wembley Arena. Our websites collectively are the second most popular entertainment/event websites in the United States, according to Nielsen//NetRatings. In addition, we also produce, promote or host theatrical, specialized motor sports and other live entertainment events. In 2006, we connected nearly 60 million fans with their favorite performers at approximately 26,000 events in 18 countries around the world. Headquartered in Los Angeles, California, Live Nation is listed on the New York Stock Exchange, trading under the symbol LYV.About AMA RacingAMA Racing is the competition arm of the American Motorcyclist Association and is the leading sanctioning body for motorcycle sport in the United States. Its professional properties include the Ampd Mobile AMA Supercross Series, the AMA Toyota Motocross Championship presented by FMF, the AMA Superbike Championship presented by Parts Unlimited, the AMA Ford Quality Checked Flat Track Championship, the AMA Supermoto Championship and the AMA Pro ATV Championship. In amateur and pro-am competition, AMA Racing sanctions over 4000 events in 24 different disciplines and supports over 110 thousand active members. For more information about professional racing, visit www.amaproracing.com. Accredited media outlets can also access an on line Press Room at www.amaproracing.com/pressroom. For amateur racing information visit www.amadirectlink.com/amrace/amasports.asp.