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,

Jannik Sinner has found a supporter in Novak Djokovic, but the latter called for a clear protocol in doping cases. He questioned the International Tennis Integrity Agency (ITIA) why it took five months to announce that Sinner failed a drug test.

The sandwich generation, up-and-coming prospects and one very important court that has nothing to do with tennis

Novak Djokovic and Nick Kyrgios have spoken openly about the lack of transparency around the positive tests provided by world No.1s Jannik Sinner and Iga Swiatek

Novak Djokovic will team with Nick Kyrgios over the next week at the Brisbane International and will start his season in Australia. But one of the main talking points which will be further ramped up surrounds Jannik Sinner's doping case.

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.

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. Anti-dopin

Nick Kyrgios has said the doping charges against Jannik Sinner and Iga Swiatek are “disgusting for our sport” as he prepares to make his long-awaited return to tennis.

Novak Djokovic has backed Nick Kyrgios over his controversial comments about Jannik Sinner’s doping case by expressing his view that the Australian has “spoken very well.” The Serbian clarified, though,