Naomi Osaka changes coach for second time this year


TOKYO – Japanese tennis superstar Naomi Osaka announced on Friday she was splitting with her coach, her second break-up this year as she battles for form and slips down the world rankings.

On the eve of the Pan Pacific Open tournament in Osaka, western Japan, the 21-year-old announced she would no longer be working with Jermaine Jenkins, who joined her team after her triumph at the Australian Open in January.”Writing this to let you guys know that me and Jay won’t be working together anymore,” Osaka tweeted.

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