Karen Khachanov, Russia, def. Dominic Thiem (6), Austria, 6-4, 6-1.

Novak Djokovic (2), Serbia, def. Roger Federer (3), Switzerland, 7-6 (6), 5-7, 7-6 (3).

Marcel Granollers, Spain, and Rajeev Ram, United States, def. Oliver Marach, Austria, and Mate Pavic (1), Croatia, walkover.

Jean-Julien Rojer, Netherlands, and Horia Tecau, Romania, def. Mike Bryan and Jack Sock (2), United States, 6-1, 7-5.

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