World number one Jannik Sinner said Friday he did not know when the highest court in sport will deliver its verdict as ATP chairman Andrea Gaudenzi stressed the Italian's doping case was "run by the book".

ATP chairman Andrea Gaudenzi has insisted Jannik Sinner's doping case was "run by the book" with no preferential treatment, and expressed confidence that tennis would survive should the Italian be banned.

World number one Jannik Sinner said Friday he had done nothing wrong as ATP chairman Andrea Gaudenzi stressed the Italian's doping case was "run by the book" with no preferential treatment. "I am 100 percent sure that there has not been any preferential treatment.

World number one Jannik Sinner said on Friday he is still in the dark about his hearing at sport's highest court over a doping controversy that continues to weigh on his mind ahead of his Australian Open title defence.

Defending champion Jannik Sinner and 10-time Australian Open winner Novak Djokovic have landed in opposite sides of the draw for the season’s first major, ruling out a replay of last year’s semifinal