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Tashkent, Uzbekistan (UzDaily.com) -- Naomi Osaka of Japan defeated Czech Petra Kvitova in a final of Australian Open to win back-to-back Grand Slams.
Osaka clinched a 7-6 (7-2) 5-7 6-4 victory over Petra Kvitova, 28, who was bidding for her first major title since being stabbed in a knife attack
Naomi Osaka, who also won the US Open in 2018, became world number one.