>> 23 athletes from five different sports have tested positive for doping in a major recheck of the London 2012 Olympics. The announcement coming from the International Olympic Committee itself, retesting 454 doping samples from the 2008 games in Beijing, and a further 265 from London 2012. Reuter's Mitch Phillips says there is a reason behind this late testing.
>> Because they can scientifically, basically, I mean what they've said the advances in science and detection over the last 8 years have enabled them to detect the presence of substances that they couldn't detect at Beijing. So that's why they store these samples for long periods, on the basis that scientific advances will help them detect them.
And that's exactly what's happened. They targeted, particularly, athletes who were still active, who they thought would be going to Rio or were hoping to qualify for Rio for the retests. And so, yes, they will be banned. Assuming their b tests support the a test positives, which they almost always do.
So, those who failed those tests from the Beijing games and now from London will be banned from the Rio Olympics.>> Last week, the IOC announced 31 athletes from the Beijing games had also tested positive. 14 of them were Russian, some of them bronze and silver medalists. Russia has been under investigation by the World Anti-Doping Agency for systematic and state-sponsored doping.
The country's track and field athletes are all currently suspended pending an investigation into the scandal, which could leave the nation absent from this year's games. And even 5-time Grand Slam champion Maria Sharapova, who has been named as one of four Russian players to compete in Rio's Women's Singles, probably won't due to a positive doping test.
Bad news in a country where Olympic success is key to national pride.