Japan's Naomi Osaka has replaced Simona Halep as world No 1. Julian Finney / Getty Images
Japan's Naomi Osaka has replaced Simona Halep as world No 1. Julian Finney / Getty Images
Naomi Osaka leaps to women's No 1 as Roger Federer slides in men's rankings
Shake-ups in WTA and ATP rankings after Australian Open comes to end on Sunday
Agence France Presse
January 28, 2019
