Australian Open: Sabalenka’s hat-trick bid faces stiff challenge from Swiatek, Gauff, Zheng

Aryna Sabalenka aims for her third consecutive Australian Open title, facing competition from Iga Swiatek, Coco Gauff, and last year's runner-up Zheng Qinwen. Gauff is confident after recent victories, Swiatek is overcoming a doping suspension, and Naomi Osaka returns after childbirth, making the tournament unpredictable.