Japan’s Naomi Osaka beat Czech Petra Kvitova in a thrilling Australian Open final to win back-to-back Grand Slams and become the new world number one.
The 21 year old US Open winner, missed three championship points in the second set but regrouped to win 7-6 5-7 6-4.
The fourth seed broke for 2-1 in the decider, then served out to clinch victory in Melbourne.
28 year old Eighth seed Kvitova, was bidding for her first major title since being stabbed in a knife attack.
