Olympics: Richards-Ross flies to 400m gold

Updated: Aug 06, 2012, 02:58 AM IST

London: Sanya Richards-Ross of the US won gold in the women`s 400 metres Sunday.

The American posted 49.55 seconds for first place, with Britain`s Christine Ohuruogu finishing strongly for silver in a season`s best of 49.70.

America`s DeeDee Trotter took bronze in 49.72.