(1) John Isner (USA) v Gilles Muller (LUX)
Grigor Dimitrov (BUL) v Donald Young (USA)
Jurgen Melzer (AUT) v Denis Istomin (UZB)
Ivan Dodig (CRO) v (8) Bernard Tomic (AUS)

(3)Radek Stepanek (CZE) v Qualy
James Blake (USA) v Ryan Sweeting (USA)
(WC) Sam Querrey (USA) v Alejandro Falla (COL)
Qualy v (7) Kevin Anderson (RSA)

(5) Alex Bogomolov Jr (RUS) v Olivier Rochus (BEL)
(WC) Ryan Harrison (USA) v (WC) Jack Sock (USA)
Qualy v Sergiy Stakhovsky (UKR)
Ernests Gulbis (LAT) v (4) Milos Raonic (CAN)

(6) Julien Benneteau (FRA) v Philipp Petzschner (GER)
Qualy v Lukasz Kubot (POL)
Benjamin Becker (GER) v Dudi Sela (ISR)
Xavier Malisse (BEL) v (2) Andy Roddick (USA)