KYRGIOS DEFEATS KHACHANOV IN FIVE. @NickKyrgios sends Melbourne Arena into rapture with a 6-2 7-6(5) 6-7(6) 6-7(7) 7-6[10-8] win over Karen Khachanov. He will meet world No.1 Rafael Nadal in the fourth round of the @AustralianOpen. #AO2020 #AusOpen #GoAussies t.co/CzSeciEELs