The International Tennis Integrity Agency (ITIA) charged both Sinner and former women’s world No.1 Iga Swiatek with anti-doping breaches earlier in the year. Sinner tested positive twice for an anabolic steroid in March but avoided a ban after the ITIA ruled he was not at fault. The World Anti-Doping Agency has appealed the decision.

Brisbane: A relaxed Novak Djokovic has shed light on what it is like to be the target of Nick Kyrgios’ vitriol, as well as sharing his thoughts on Jannik Sinner, the anti-doping process in tennis, and hiring Andy Murray as his coach.

Novak Djokovic has added his voice to the frustrations in tennis over the handling of Jannik Sinner and Iga Swiatek's doping cases.