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Christine Ohuruogu of Great Britain wins in surprising fashion with a time of 49.62. Pre race favourite Sanya Richards dominates the first 300m, but has difficulty in the final quarter of the race, allowing Ohuruogu to surge ahead around the final bend. She gives Great Britain its first Olympic gold medal in this event. Athletics 400m Women Final - Beijing 2008 - Christine Ohuruogu (GBR), Shericka Williams (JAM), Sanya Richards (USA).