Four-time grand slam champion Naomi Osaka set up a China Open last-16 clash with Coco Gauff on Monday while top seed Aryna Sabalenka also marched on in ruthless fashion. Osaka defeated 60th-ranked American Katie Volynets 6-3, 6-2 and faces Gauff in a showdown of former US Open champions in Beijing. World No 2 Sabalenka swatted aside Ashlyn Krueger 6-2, 6-2 and plays another American in 24th-ranked Madison Keys.
Former world No 1 Osaka is playing her first tournament under Patrick Mouratoglou, the Frenchman best known for being the long-time former coach of Serena Williams. The 26-year-old Japanese has struggled for consistency and form since returning to tennis in January after the birth of her daughter Shai, in July last year, and is ranked 73rd in the world..
