Four years after settling for bronze, Sanya Richards-Ross won gold in the women's 400.

WSJ: Menu

Olympic bronze medallist Sanya Richards ran the fastest women's 400m of the year to win gold in 49 seconds.

BBC: Bolt storms through to 200m semis

Olympic bronze medallist Sanya Richards of the United States - who faded in the final won by Briton Christine Ohuruogu in Beijing - won the women's 400m in an overdue season's best of 49.74 secs, with Jamaica's Shericka Williams, second in Beijing, off the pace in fourth.

BBC: Bolt marks return with easy win

Olympic champion Christine Ohuruogu has another chance to take on world champion Sanya Richards in the 400m, while world bronze medallist Jenny Meadows goes in the 800m.

BBC: Gay too good for Powell in Greece