Novak Djokovic demands change in doping rules after Jannik Sinner case
Serb says players think some get preferential treatmentCalls for governing bodies to ‘have a better approach’Novak Djokovic has called for anti-doping rules in tennis to change in the light of Jannik Sinner’s recent case and he says that he understands why players have questioned whether doping cases are treated equally.“There is a lot of issues in …