Clear Channel Entertainment’s Motor Sports division announced today that 12-AMA National Champion Ricky Carmichael, of Havana, Fla., entered the 2005 U.S. Open at the MGM Grand Garden Arena in Las Vegas October 7-9.Carmichael, the winner of the 2000 & 2001 U.S. Open recently captured his fourth 250cc supercross championship. Last year he made his dbut at the U.S. Open on his new Team, Suzuki, and finished (2-11) in front of a sold-out crowd.Currently Carmichael is dominating the AMA Motocross Championships and has won eight of eight events thus far. Carmichael is one of the only riders who have competed in every U.S. Open since 1998. Fans can get up to speed on all of the latest news on Carmichael and the rest of the latest U.S. Open news on the re-vamped www.ussx.com.”The U.S. Open is a special event for me,” said Carmichael. “The track is always awesome and gives fans some of the best racing money can buy,” said Carmichael. “Last year was a good status check for me and the progress Team Suzuki was making in getting me the best bike possible. This year I want to pick up the win and take home that $100,000 check.”The eighth-annual U.S. Open, which will broadcast nationally on NBC for the second consecutive season, features the world’s top motocross racers competing for the world’s largest single race purse of $300,000. The prestigious invitation list includes four-time supercross champion and two-time U.S. Open champion Ricky Carmichael (Suzuki); two-time defending U.S. Open champion Chad Reed (Yamaha); two-time 125cc regional supercross champion James Stewart (Kawasaki); former US Open champion Mike LaRocco; 125cc regional supercross champion and action sports star Travis Pastrana (Suzuki). Racers will compete inside the MGM Grand Garden Arena October 7-8 on a technical course built with some 300 truckloads of dirt.Tickets for the 2005 U.S. Open are on-sale now and available through www.ticketmaster.com, by calling 702/474-4000, or at the MGM Grand Garden Arena box office.