Jamaican born former world and Olympic champion Sanya Richards-Ross is backing proposals to rewrite world records.

Richards-ross could inherit the 400metres record, replacing the 47.60 seconds set by East Germany’s Marita Koch in 1985.

Her time of 48.70 is the fastest since 2005.

Although Richards-Ross does not think all world records set after 2005 – the point from which, under European athletics proposals, records would be reset – are clean, the 32-year-old said she think there’s a better chance and a higher ratio of them being clean.”

Koch competed during a time when it is known that East Germany was doping its athletes but she has denied any wrongdoing and never failed a drugs test.

However East German secret police documents, which detailed doping dosages of athletes including Koch, were made public in 1990.