Naomi Osaka shows off Yonex racket designed by sister Mari

Four-time Grand Slam champion Naomi Osaka took to Instagram to reveal her sister Mari helped design the latest racket from Yonex collection.

Mari, who broke into the top-300 in 2018, is now retired and she has turned her focus on fashion design.

"A brand new beautiful racquet, designed by my talented sister, Mari Osaka. Big thank you to Yonex for being like a family and supporting me all these years. (PS you can get these racquets and bag on Aug 25)," Osaka wrote on Instagram.

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