Big names highlight Tuesday's schedule

Arthur Ashe Stadium

Not before 1 p.m.
Men's fourth round: Stanislas Wawrinka (25) vs. Sam Querrey (20)
Women's quarterfinals: Francesca Schiavone (6) vs. Venus Williams (3)

Night session
Play begins at 7 p.m.
Women's quarterfinals: Samantha Stosur (5) vs. Kim Clijsters (2)
Men's fourth round: Rafael Nadal (1) vs. Feliciano Lopez (23)
 

Louis Armstrong Stadium

Men's fourth round: Mikhail Youzhy (12) vs. Tommy Robredo

Not before 4 p.m.
Men's fourth round: David Ferrer (10) vs. Fernando Verdasco (8)