NEW YORK (AP) Roger Federer and Rafael Nadal will play their opening-round matches, while women's No. 1 seed Karolina Pliskova is also in action on the second day of the U.S. Open.
Nadal, who has returned to No. 1, faces Serbia's Dusan Lajovic in an afternoon match in Arthur Ashe Stadium. Federer, seeded third, meets young American Frances Tiafoe on Tuesday night under the lights.
Federer, a five-time U.S. Open champion, is 16-0 in first-round matches at the U.S. Open. Nadal is also unbeaten, going 12-0 while winning the title twice.
Pliskova is scheduled for the first match on Ashe when the Czech faces Magda Linette of Poland.
Defending women's champion Angelique Kerber of Germany and 2009 men's champion Juan Martin del Potro are also on the schedule, with rain in the forecast for later in the day.