Trey Hardee concedes he might be one of least known athletes in the United States — and the double decathlon world champion hopes it stays that way.The 27-year-old won gold in the World Championships in Daegu on Sunday, following on from his world title in Berlin two years ago. Fellow American Aston Eaton took the silver in the first decathlon 1-2 by any country at world championships. While Hardee added his name to America's great tradition in the 10-sport event, he hoped his success would not vault him into the public eye and he could continue to fly below the radar. Hardee told reporters in the South Korean city on Monday that he prefers it that way. Hardee's victory gave the United States it's fourth decathlonb world title of the last five championships.