NEW YORK (AP) – The Latest on the U.S. Open, the last Grand Slam tournament of the year (all times local):
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11:45 a.m.
Play has begun on the first day of the U.S. Open, with Wimbledon champion Garbine Muguruza on the Arthur Ashe Stadium court against American Varvara Lepchenko.
Other matches getting underway on the main courts include two-time Wimbledon champion Petra Kvitova against former No. 1 Jelena Jankovic, Spaniard Nicolas Almagro against American Steve Johnson and No. 32-seeded Lauren Davis against fellow American Sofia Kenin.