Naomi Osaka signs autographs after winning her second round match against Ukraine's Elina Svitolina at the Australian Open tennis tournament at Melbourne Park, Australia on January 21, 2016. Reuters
Naomi Osaka celebrates her new book The Way Champs Play at Barnes & Noble at The Grove on December 08, 2022 in Los Angeles, California. Getty Images via AFP
Naomi Osaka of Japan in action against Daria Saville of Australia during a match of the Pan Pacific Open tennis tournament in Tokyo, Japan on September 20, 2022. EPA
Co-chair Naomi Osaka attends The 2021 Met Gala Celebrating In America: A Lexicon Of Fashion at Metropolitan Museum of Art on September 13, 2021 in New York City. Getty Images via AFP
Naomi Osaka of Team Japan celebrates after match point in her Women's Singles Second Round match against Viktorija Golubic of Team Switzerland on day three of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 26, 2021 in Tokyo, Japan. Getty Images
Naomi Osaka holds the Olympic torch after lighting the Olympic Cauldron during the opening ceremony of the 2020 Tokyo Summer Olympics at the National Stadium in Tokyo, Japan, 23 July 2021. EPA-EFE
Naomi Osaka reacts as she sits down during a change of ends in her Ladies' Singles first round match against Yulia Putintseva of Kazakhstan during Day one of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 01, 2019 in London, England. Getty Images
Naomi Osaka posing with the Daphne Akhurst Memorial Cup trophy after defeating Jennifer Brady of the US in their women's singles final match on day 13 of the Australian Open tennis tournament in Melbourne in 2021. AFP
Naomi Osaka lands via helicopter after a tour of Brisbane ahead of the 2020 Brisbane International at Pat Rafter Arena on January 2, 2020 in Brisbane, Australia. Getty Images
Naomi Osaka poses with Sprocket the Koala ahead of the 2019 Brisbane International at Lone Pine Koala Sanctuary on December 27, 2018 in Brisbane, Australia. Getty Images
Naomi Osaka attends the official draw ceremony and gala of the WTA Finals Singapore at Marina Bay Sands Hotel on October 19, 2018 in Singapore. AFP
Naomi Osaka, right, and Serena Williams of the US at the net after the women's final on the 13th day of the US Open Tennis Championships the USTA National Tennis Center in Flushing Meadows, New York, US on September 8, 2018. EPA-EFE
Naomi Osaka serves against Johanna Konta of Britain during round two of the Women's Singles at the Australian Open Grand Slam tennis tournament in Melbourne, Victoria, Australia on January 19, 2017. EPA
Naomi Osaka signs autographs after winning her second round match against Ukraine's Elina Svitolina at the Australian Open tennis tournament at Melbourne Park, Australia on January 21, 2016. Reuters
Naomi Osaka celebrates her new book The Way Champs Play at Barnes & Noble at The Grove on December 08, 2022 in Los Angeles, California. Getty Images via AFP
Naomi Osaka of Japan in action against Daria Saville of Australia during a match of the Pan Pacific Open tennis tournament in Tokyo, Japan on September 20, 2022. EPA
Co-chair Naomi Osaka attends The 2021 Met Gala Celebrating In America: A Lexicon Of Fashion at Metropolitan Museum of Art on September 13, 2021 in New York City. Getty Images via AFP
Naomi Osaka of Team Japan celebrates after match point in her Women's Singles Second Round match against Viktorija Golubic of Team Switzerland on day three of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 26, 2021 in Tokyo, Japan. Getty Images
Naomi Osaka holds the Olympic torch after lighting the Olympic Cauldron during the opening ceremony of the 2020 Tokyo Summer Olympics at the National Stadium in Tokyo, Japan, 23 July 2021. EPA-EFE
Naomi Osaka reacts as she sits down during a change of ends in her Ladies' Singles first round match against Yulia Putintseva of Kazakhstan during Day one of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 01, 2019 in London, England. Getty Images
Naomi Osaka posing with the Daphne Akhurst Memorial Cup trophy after defeating Jennifer Brady of the US in their women's singles final match on day 13 of the Australian Open tennis tournament in Melbourne in 2021. AFP
Naomi Osaka lands via helicopter after a tour of Brisbane ahead of the 2020 Brisbane International at Pat Rafter Arena on January 2, 2020 in Brisbane, Australia. Getty Images
Naomi Osaka poses with Sprocket the Koala ahead of the 2019 Brisbane International at Lone Pine Koala Sanctuary on December 27, 2018 in Brisbane, Australia. Getty Images
Naomi Osaka attends the official draw ceremony and gala of the WTA Finals Singapore at Marina Bay Sands Hotel on October 19, 2018 in Singapore. AFP
Naomi Osaka, right, and Serena Williams of the US at the net after the women's final on the 13th day of the US Open Tennis Championships the USTA National Tennis Center in Flushing Meadows, New York, US on September 8, 2018. EPA-EFE
Naomi Osaka serves against Johanna Konta of Britain during round two of the Women's Singles at the Australian Open Grand Slam tennis tournament in Melbourne, Victoria, Australia on January 19, 2017. EPA
Naomi Osaka signs autographs after winning her second round match against Ukraine's Elina Svitolina at the Australian Open tennis tournament at Melbourne Park, Australia on January 21, 2016. Reuters