Zverev and Gauff ease into US Open last 16 but Alex Eala falls to Jovic
Filipina Alex Eala lost a three-set thriller to American Iva Jovic, as Naomi Osaka overcame Elise Mertens to progress.
<p>Filipina Alex Eala lost a three-set thriller to American Iva Jovic, as Naomi Osaka overcame Elise Mertens to progress.</p>