Chambers backs re-tests
Dwain Chambers has welcomed the IOC's decision to re-test samples provided for doping tests at the Beijing Games, hailing the "strong message" it sends.
The review has been ordered after traces of banned substance EPO Cera were found during a re-test of samples from cycling's Tour de France.
Chambers told Five Live: "It shows the testing is getting more stringent and I'm curious to see the outcome."