Meanwhile, Trey Hardee of the United States won his first major title with victory in the men's decathlon.

BBC: Walker storms to 400m hurdle gold

He ended 198 points clear of teammate and two-time world champion Trey Hardee with Cuba's Leonel Suarez taking the bronze.

CNN: Bolt makes history with 200m triumph at London Olympics

Eaton, 24, cemented his status as gold-medal favorite for the London Games, where he will be joined by Trey Hardee, the reigning world champion, who finished second.

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