US Open: Naomi Osaka takes care of business against Elise Mertens while Iva Jovic edges out good friend Alex Eala in thriller - Sky Sports

US Open: Naomi Osaka Advances; Iva Jovic Thrills in a Close Match

Naomi Osaka took care of business against Elise Mertens while Iva Jovic secured a thrilling victory over her good friend Alex Eala on Sky Sports.