Oliver Marach, Austria, and Mate Pavic (1), Croatia, def. Ivan Dodig, Croatia, and Damir Dzumhur, Bosnia-Herzegovina, 6-3, 7-5.
Jean-Julien Rojer, Netherlands, and Horia Tecau, Romania, def. Jurgen Melzer, Austria, and Nenad Zimonjic, Serbia, 6-3, 6-4.
Rajeev Ram, India, and Joe Salisbury (4), Britain, def. Karen Khachanov and Daniil Medvedev, Russia, 6-2, 6-1.
Philipp Kohlschreiber, Germany, and Fernando Verdasco, Spain, def. Robin Haase and Matwe Middelkoop, Netherlands, 5-7, 6-3, 10-4.
Ben McLachlan, Japan, and Jan-Lennard Struff, Germany, def. Dominic Inglot, Britain, and Franko Skugor, Croatia, 6-2, 6-2.
Jeevan Nedunchezhiyan and Purav Raja, India, def. Henri Kontinen, Finland, and John Peers (3), Australia, 0-6, 6-4, 10-8.