Feliciano Lopez (8), Spain, def. Gilles Simon, France, 7-6 (6), 6-4.

Guido Pella, Argentina, def. Prajnesh Gunneswaran, India, 7-6 (4), 6-3.

Nick Kyrgios (4), Australia, def. Maximilian Marterer, Germany, 6-4, 4-6, 6-3.

Tom Berdych (3), Czech Republic, def. Benoit Paire, France, 7-6 (3), 6-4.

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Milos Raonic (7), Canada, def. Marton Fucsovics, Hungary, 6-2, 6-4.

Jonathan Eysseric and Lucas Pouille, France, def. Ben McLachlan, Japan, and Jan-Lennard Struff (2), Germany, 6-7 (5), 6-3, 10-7.

Robert Lindstedt, Sweden, and Marcin Matkowski, Poland, def. Max Mirnyi, Belarus, and Philipp Oswald (3), Austria, 6-3, 6-4.

Philipp Petzscher and Tim Puetz, Germany, def. Marcelo Demoliner, Brazil, and Feliciano Lopez (4), Spain, 6-4, 6-7 (5), 10-6.

Aisam-ul-Haq Qureshi, Pakistan, and Jean-Julien Rojer (1), Netherlands, def. Nick Kyrgios, Australia, and Jackson Withrow, United States, 6-7 (5), 7-5, 10-8.