Novak Djokovic (1) def. Sam Querrey (23), 6-0, 7-6 (8-6)
Roger Federer (2) def. Stanislas Wawrinka (18), 6-3, 6-7 (4-7), 7-5
Andy Murray (3) def. Carlos Berlocq, 7-6 (7-4), 6-4
Rafael Nadal (5) def. Ernests Gulbis, 4-6, 6-4, 7-5
Tomas Berdych (6) def. Richard Gasquet (10), 6-1, 7-5
Juan Martin del Potro (7) def. Tommy Haas (19), 6-1, 6-2
Jo-Wilfried Tsonga (8) def. Milos Raonic (17), 4-6, 7-5, 6-4
Kevin Anderson def. Gilles Simon (13), 6-3, 1-6, 6-4