Donald Young of the United States celebrates after defeating Juan...

Donald Young of the United States celebrates after defeating Juan Ignacio Chela of Argentina during Day Seven of the 2011 US Open at the USTA Billie Jean King National Tennis Center. (Sept. 4, 2011) Credit: Getty Images

ARTHUR ASHE STADIUM

Play begins at 11 a.m.

Donald Young vs. Andy Murray (4)
Gilles Muller vs. Rafael Nadal (2)

Night session
Play begins at 7 p.m.

David Ferrer (5) vs. Andy Roddick (21)

LOUIS ARMSTRONG STADIUM

John Isner (28) vs. Gilles Simon (12)
Angelique Kerber vs. Flavia Pennetta (26)
Sam Stosur (9) vs. Vera Zvonareva (2)

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