Defending champion Naomi Osaka has cruised into the third round of the Australian Open after defeating China’s Zheng Saisai in straight sets.
The world No.4’s 6-2 6-4 victory on Margaret Court Arena sets up a potential third-round showdown with American teen sensation Coco Gauff.
Fifteen-year-old Gauff plays Romania’s Sorana Cirstea later on Wednesday.
