The former world number one Sharapova admitted to taking meldonium for 10 years, though said it had been for medical reasons. She will be provisionally suspended from March 12.
Meldonium was not added to the World Anti-Doping Agency’s banned list until January 1 this year, and several other athletes – including former 1500m world champion Abeba Aregawi – have already tested positive for use of the drug.
“I find it strange that there’s a prescription drug used for heart conditions and so many athletes competing at the top level of their sport would have that condition. That sounds a bit off to me.”
Murray said though he noted an improvement in testing for doping, more could be done.
“It’s better than it was a few years ago,” he said. “Last year I certainly got tested a lot, but this year I have been tested twice, three months into the year, which clearly is not enough.”
However, Sharapova’s shock announcement has divided opinions on the likelihood of other similar cases.
Women’s world number one Serena Williams said of the scandal: “The majority of the players really pride themselves on having integrity and playing with that.”
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