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.
A couple of days before she returned to the site of her stunning upset of Serena Williams at the 2015 U.S. Open, Roberta Vinci was grabbing a coffee at a Starbucks in Manhattan when her breakfast was interrupted by fellow customers. "Some Americans recognized me," Vinci recounted, a mix of appreciation and bewilderment written on her face. Regardless of whatever else may come for Vinci on — or, indeed, away from — a tennis court, the Italian will always be remembered as the woman who stopped Williams' bid to complete the first calendar-year Grand Slam in more than a quarter-century.
Novak Djokovic double-faulted, then shook his right arm and grimaced. Seconds later Monday night, a weak serve produced a wince from the U.S. Open's defending champion, then was followed by a missed forehand that gave away a set - the first set dropped by Djokovic in the first round of any Grand Slam tournament since 2010. While he managed to emerge with a 6-3, 5-7, 6-2, 6-1 victory over Jerzy Janowicz of Poland, there were plenty of signs of trouble, starting with a visit from a trainer who massaged Djokovic's bothersome arm after only five games.