Aryna Sabalenka and Jannik Sinner emphatically stated their Australian Open title credentials on Friday, surging into the fourth round as a below-par Novak Djokovic prepared for another testing examination. US Open champion Coco Gauff also signalled her intent in a 6-0, 6-2 romp while 16-year-old Russian Mirra Andreeva kept her dream run going with a battling fightback against France's Diane Parry. Belarusian defending champion Sabalenka was unstoppable in a crushing 6-0, 6-0 canter over 28th seed Lesia Tsurenko on Rod Laver Arena while Sinner dropped just four games in crushing Sebastian Baez, ranked 29.