'Brazil's sports ministry confirmed no tests were carried out between July 1 and July 24 due to a WADA suspension on drug testing lab'

WADA questions why athletes were not dope-tested ahead of Rio 2016

Mamadou Sakho was provisionally banned for 30 days after testing positive for an illegal substance, following Europa League tie on March 17

UEFA dismisses doping case against Sakho

These results may pile pressure on the IOC to make the unprecedented move of banning an entire country from the 2016 Games for doping

International Olympic Committee's executive board are to hold a conference call on Sunday to discuss banning Russia from the Rio Games

The report said a dozen doping cases in Russian football were among hundreds covered up by Moscow

The investigation by lawyer Richard McLaren revealed that the manipulation of samples was controlled by Vitaly Mutko's ministry

Vitaly Mutko said his adviser, along with two sporting officials and Moscow anti-doping laboratory deputy head, were temporarily suspended

Shobukhova's 2010 and 2011 London Marathon titles were stripped after irregularities were detected in her biological passport

'...My confidence isn't high to think that there are not real issues...it is very hard to deal with as a clean athlete'--Allyson Felix

A documentary by German TV and British newspaper showed boxes of endurance-boosting drug EPO and syringes inside the training centre at Iten

Renowned for its distance runners, Kenya has faced frequent allegations of doping with about 40 cases reported in the past four years

Russian athletes training outside the country can apply to compete as neutrals at the August event in Brazil

Country's sports minister speaks up after WADA report said hundreds of the country's athletes had refused to be tested

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