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OSAKA, JAPAN - SEPTEMBER 22: Singles champion Naomi Osaka of Japan poses for photographs with the trophy after the Singles final agains Anastasia Pavlyuchenkova of Russia during day seven of the Toray Pan Pacific Open at Utsubo Tennis Cent on September 22, 2019 in Osaka, Japan. (Photo by Koji Watanabe/Getty Images)

OSAKA, JAPAN - SEPTEMBER 22: Singles champion
Naomi Osaka of Japan poses for photographs with the trophy after the Singles final agains Anastasia Pavlyuchenkova of Russia during day seven of the Toray Pan Pacific Open at Utsubo Tennis Cent on September 22, 2019 in Osaka, Japan. (Photo by Koji Watanabe/Getty Images)

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MELBOURNE, AUSTRALIA - JANUARY 26: Naomi Osaka of Japan 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 Julian Finney/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 26:  Naomi Osaka of Japan 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 Julian Finney/Getty Images)