NEW YORK, NY - AUGUST 29: Rafael Nadal attends the 20th Annual Arthur Ashe Kids' Day at USTA Billie Jean King National Tennis Center on August 29, 2015 in the Queens borough of New York City. (Photo by Steven Henry/Getty Images)
NEW YORK, NY - AUGUST 29: Rafael Nadal attends the 20th Annual Arthur Ashe Kids' Day at USTA Billie Jean King National Tennis Center on August 29, 2015 in the Queens borough of New York City. (Photo by Steven Henry/Getty Images)