Day nine of the US Open will see the women compete for semi-final slots, while the men will battle it out for places in the quarter-finals.
Sports Mole brings you the order of play as the tournament at Flushing Meadows reaches a critical stage.
Arthur Ashe Stadium (4pm start)
Victoria Azarenka vs. Samantha Stosur - quarter-final
Maria Sharapova vs. Marion Bartoli - quarter-final
Stanislas Wawrinka vs. Novak Djokovic - round four
Juan Martin Del Potro vs. Andy Roddick - round four
Louis Armstrong Stadium (6pm start)
Richard Gasquet vs. David Ferrer - round four
Janko Tipsarevic vs. Philipp Kohlschreiber - round four