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Retired British sprinter Roger Black has spoken out in favour of new anti-doping rules after he suffered a defeat at the hands of drug cheats.
The double World Championship gold medallist explained to Daybreak how American sprinters robbed him and his teammates of "the moment" of victory.
"What they took away was the moment. We never experienced the moment. The moment where you're standing on the rostrum with three other teammates and celebrating to be the best in the world."
The new system of testing for doping in sport will have an "extremely deterrent" effect, world football body Fifa's chief medical officer has said.
Professor Jiri Dvorak said testers would now be able to freeze blood and urine samples so that scientists can re-test them later on, potentially using newer technologies to detect performance-enhancing drugs.
"There is a strong evidence that if you re-analyse the samples from past years that new methods would find them, this is an extremely deterrent method," he said.
"Most of the international federations decided to freeze the samples for a number of years.
Footballers at this summer's World Cup will be among the first athletes to face a new testing system designed to weed out doping in sport.
Under the new regime athletes will have blood and urine samples compared over time to create a 'biological passport' that tracks changes in their body over time.
Major sports federations, medics and doping experts agreed to the new system, which they hope will combat increasingly sophisticated doping techniques.