U.S. Open 2013 (96 images)

Rafael Nadal of Spain sits under an umbrella as rain delays the match against Ryan Harrison (USA) in the first set of their first round match at the U.S. Open Championship held at the USTA Billie Jean King National Tennis Center on August 26, 2013 in New York City. UPI Photo/Monika Graff

Ryan Harrison (USA) returns the ball to Rafael Nadal of Spain in the first set of their first round match at the U.S. Open Championship held at the USTA Billie Jean King National Tennis Center on August 26, 2013 in New York City. UPI Photo/Monika Graff

Rafael Nadal of Spain wipes the sweat from his face as he takes on Ryan Harrison (USA) in the first set of their first round match at the U.S. Open Championship held at the USTA Billie Jean King National Tennis Center on August 26, 2013 in New York City. UPI Photo/Monika Graff

Venus Williams stands on the court in the second set in her first round match against Kirsten Flipkens of Belgium at the U.S. Open Tennis Championships in Arthur Ashe Stadium at the USTA Billie Jean King National Tennis Center in New York City on August 26, 2013. UPI/John Angelillo