Novak Djokovic expressed his frustration at being 'kept in the dark' about world number one Jannik Sinner's doping case, saying in Brisbane on Sunday that it was not a good look for tennis.

Nick Kyrgios lashed out Saturday at what he believes is the lenient treatment of world tennis number one Italian Jannik Sinner for a failed drug test and said integrity in the sport was "awful".

Nick Kyrgios lashed out this week at what he believes is the lenient treatment of world tennis number one Italian Jannik Sinner for a failed drug