In its maiden match, Caroline Wozniacki—a two-time finalist here—beat Taylor Townsend in three sets, 7-5 in the third. Then young American Frances Tiafoe served for the match against John Isner but capitulated and fell 7-6 in the fifth set. Keep an eye on Naomi Osaka, an 18-year-old based in Florida who plays for Japan.
It's been almost one year since Pennetta affixed her name to that list, yet as she returned to Flushing Meadows on Friday, that moment felt much longer ago than 12 months. ''I had the chance to say to everyone in the perfect moment in the perfect way,'' Pennetta told The Associated Press before she appeared at the U.S. Open draw ceremony as the reigning women's champion. At too many events, Pennetta was thinking: ''Why am I here?
In a less-traveled part of the 46-acre Billie Jean King National Tennis Center, an imposing black metal fence offers a reminder of the multiple security worries that come with hosting the U.S. Open. New York Police Department counterterrorism officials insisted that the fence, near a new 8,000-seat grandstand stadium, be reinforced earlier this year with thick strands of cable capable of withstanding a crash from a truck loaded with explosives. ''A lot of this stuff is off the radar, but it goes back to what's happening in the world,'' the event's security director, Michael Rodriguez, said during a flurry of last-minute preparations for Monday's opening matches.