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