Teenage hotshot Naomi Osaka was her own worst critic after a shock early exit at the Japan Women's Open on Wednesday, and admitted she had to change her "childish" ways ahead of another event in Tokyo next week at the Pan Pacific Open.
Osaka, at No. 46 Japan's highest-ranked player in the world, was widely expected to beat 108th-ranked compatriot Kurumi Nara in their first-round clash, but the 19-year-old of Haitian and Japanese descent instead was left to pick up the pieces of a comprehensive 6-3, 6-0 defeat at Ariake Tennis Forest Park.
"I originally thought I was going to have a lot of fun and just play well. But then when I started the match I was really nervous and then I felt a lot of pressure and I guess I didn't really cope with it that well," said Osaka.