LIVE LIKE A PLAYER: Naomi Osaka, world No.5 and reigning US Open champion, serves during Hobart International 2018; Getty Images

LIVE LIKE A PLAYER: Naomi Osaka, world No.5 and reigning US Open champion, serves during Hobart International 2018; Getty Images

LIVE LIKE A PLAYER: Naomi Osaka, world No.5 and reigning US Open champion, serves during Hobart International 2018; Getty Images

LIVE LIKE A PLAYER: Naomi Osaka, world No.5 and reigning US Open champion, serves during Hobart International 2018; Getty Images