Andy Murray has expressed his sympathy for Naomi Osaka after she was heckled – but has warned his fellow tennis stars that they must learn to 'tolerate' such abuse.
Osaka was visibly upset during her second round match against Veronika Kudermetova at the Indian Wells Masters, after she was targeted by a heckler in the crowd.
The Japanese tennis star produced an inspiring comeback victory over Sloane Stephens in her first match in California, but fell in straight sets to the world number 24.
