After a one-year ban for missing three out-of-competition drugs tests, Christine Ohuruogu prepares for the 400m final

She loses ground on the leaders in the opening stages of the race and finds herself well down going into the final 100m

With the end in sight, Jamaica's Novlene Williams tires allowing Ohuruogu and fellow Briton Nicola Sanders to catch up

The duo time their runs to perfection and both dip home ahead of Williams to seal a dramatic one-two for Great Britain

They become the first British pair to take gold and silver since Colin Jackson and Tony Jarrett in the 110m hurdles in 1993

Ohuruogu also becomes the first British woman to win a World Championship track event since Sally Gunnell in 1993

The result takes Great Britain's medal haul to three and leaves them joint fifth in the World Championships' medal table