Murray unforgiving on doping offences

Andy Murray says a lack of professionalism led to failed drugs tests for Viktor Troicki and Marin Cilic.

Opinion has been divided on Troicki's one-year ban for failing to undergo a blood test, with his compatriot Novak Djokovic calling the punishment a "total injustice".

Cilic served a four-month ban for ingesting a prohibited substance, an offence for which Murray says there is "no excuse".

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