Naomi Osaka was born 16 October 1997 to a Japanese mother and a Haitian father. In the 2016 US Open, a serve by her was timed at 201.1km/h. At 18, Osaka was the youngest player inside the world’s top 50 when she signed with IMG Tennis in the summer of 2016. Osaka embodies her sport – multiracial, multinational, multilayered. Naomi Osaka Biography and Profile.