On the eve of his return to the court, Novak Djokovic has weighed in on tennis's high-profile doping cases and criticized what he perceives as double standards in the sport. The former world No. 1, who is chasing a record 25th Grand Slam title at next month's Australian Open,

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.

Novak Djokovic has hit out at perceived double standards in tennis doping investigations as he claimed the sport is being “kept in the dark” over the Jannik Sinner case.