The Latest: Federer, Serena lead off US Open third round

NEW YORK (AP) - The Latest on the U.S Open tennis tournament (all times local):

11:30 a.m.

Play has begun at the U.S. Open, with third-seeded Karolina Pliskova and seventh-seeded Kei Nishikori taking the courts under sunny skies and no rain in the forecast.

Pliskova's third-round match against Ons Jabeur ...