Show courts schedule on Saturday at the U.S. Open:
Arthur Ashe Stadium
Play begins at 1600 GMT
Rafael Nadal (3), Spain, vs. Juan Martin del Potro (6), Argentina
Not before 2030 GMT: Roger Federer (1), Switzerland, vs. Novak Djokovic (4), Serbia
Night Session
Play begins at 0100 GMT
Women's Singles Final: Caroline Wozniacki (9), Denmark, vs. Kim Clijsters, Belgium
