Naomi Osaka from Japan has won the women’s singles 2019 Australian Open Tennis Tournament. She beat Czech Petra Kvitova in a seesaw Australian Open final by 7-6 (7-2) 5-7 6-4 to win back-to-back Grand Slams and become the new World No.1. Osaka is known for her multi-ethnic background and her shy, candid personality. On the court, she has an aggressive playing style with a powerful serve.