Ohuruogu's 400m track gold

BBC Sport reflects on Christine Ohuruogu's performance at Beijing 2008, where she took gold in the 400m.

Ohuruogu won GB's only track and field Olympic gold at the Games.

The British runner is hoping to defend her title at London 2012, after being disqualified in the heats of the 400m at last year's World Athletics Championships.

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