Bed at 6:45am - US Open semi-finalists fight effects of late-night finishes
New York is known as the city that never sleeps. But that comes at a price for US Open stars - including men's semi-finalists Ben Shelton and Alexander Zverev.
<p>New York is known as the city that never sleeps. But that comes at a price for US Open stars - including men's semi-finalists Ben Shelton and Alexander Zverev.</p>