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MELBOURNE, AUSTRALIA - JANUARY 26: Naomi Osaka of Japan poses for a photo with the Daphne Akhurst Memorial Cup following victory in her Women's Singles Final match against Petra Kvitova of the Czech Republic during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 26:  Naomi Osaka of Japan poses for a photo with the Daphne Akhurst Memorial Cup following victory in her Women's Singles Final match against Petra Kvitova of the Czech Republic during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia.  (Photo by Mark Kolbe/Getty Images)

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MELBOURNE, AUSTRALIA - JANUARY 26: Naomi Osaka of Japan poses for a photo with the Daphne Akhurst Memorial Cup following victory in her Women's Singles Final match against Petra Kvitova of the Czech Republic during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 26:  Naomi Osaka of Japan poses for a photo with the Daphne Akhurst Memorial Cup following victory in her Women's Singles Final match against Petra Kvitova of the Czech Republic during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia.  (Photo by Quinn Rooney/Getty Images)

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MELBOURNE, AUSTRALIA - JANUARY 26: Naomi Osaka of Japan poses for a photo with the Daphne Akhurst Memorial Cup following victory in her Women's Singles Final match against Petra Kvitova of the Czech Republic during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 26:  Naomi Osaka of Japan poses for a photo with the Daphne Akhurst Memorial Cup following victory in her Women's Singles Final match against Petra Kvitova of the Czech Republic during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia.  (Photo by Mark Kolbe/Getty Images)

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MELBOURNE, AUSTRALIA - JANUARY 26: Naomi Osaka of Japan poses for a photo with the Daphne Akhurst Memorial Cup following victory in her Women's Singles Final match against Petra Kvitova of the Czech Republic during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 26:  Naomi Osaka of Japan poses for a photo with the Daphne Akhurst Memorial Cup following victory in her Women's Singles Final match against Petra Kvitova of the Czech Republic during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia.  (Photo by Mark Kolbe/Getty Images)