Born in the US, Naomi Osaka is the first Asian player to hold the top ranking for singles tennis. Osaka quickly rose to fame after defeating tennis superstar Serena Williams during the 2018 US Open. Since then she has gone on to win several major championships including the 2019 Australian Open and the 2019 China Open. Learn about Osaka's Japanese and Haitian heritage, her hobbies outside of tennis, how she trains, and more.