Juan Martin del Potro (6), Argentina, def. Nicolas Almagro (15), Spain, 6-3, 6-3.
Jo-Wilfried Tsonga (7), France, def. Florian Mayer, Germany, 6-2, 6-3.
Novak Djokovic (1), Serbia, def. Gael Monfils, France, 6-7 (4), 6-2, 6-4.
Rafael Nadal (2), Spain, def. Stanislas Wawrinka (8), Switzerland, 7-6 (10), 6-1.
Bob and Mike Bryan (1), United States, def. Treat Huey, Philippines, and Dominic Inglot, Britain, 7-5, 7-6 (4).
David Marrero and Fernando Verdasco (8), Spain, def. Marcel Granollers and Marc Lopez (2), Spain, 6-3, 6-4.
Ivan Dodig, Croatia, and Marcelo Melo (5), Brazil, def. Jean-Julien Rojer, Netherlands, and Aisam-Ul-Haq Qureshi (4), Pakistan, 7-6 (4), 6-3.
Jamie Murray, Britain, and John Peers, Australia, def. Robert Lindstedt, Sweden, and Vasek Pospisil, Canada, 3-6, 6-3, 10-6.
