doping
The Court of Arbitration for Sport (CAS) on Thursday dismissed appeals by Russian athletes Tatyana Lebedeva and Maria Abakumova and cyclist Ekaterina Gnidenko against their Olympic disqualifications for doping.
Serena Williams demanded fair treatment from US doping chiefs after the former Wimbledon champion was shocked to be subjected to a series of tests in June.
A despondent mood swept through Russian athletes at the Pyeongchang Winter Games
Jamaica's Commonwealth Games 200-metres bronze medallist Jason Livermore tested positive for a banned substance.
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