Rudolf Molleker, Germany, def. Jan-Lennard Struff, Germany, 6-4, 6-7 (5), 6-3.

Florian Mayer, Germany, def. Yannick Maden, Germany, 6-4, 6-1.

Mischa Zverev, Germany, def. Mikhail Youzhny, Russia, 7-6 (5), 6-3.

Guido Pella, Argentina, def. John Millman, Australia, 6-2, 6-2.

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Marcelo Demoliner, Brazil, and Feliciano Lopez (4), Spain, def. Philipp Kohlschreiber, Germany, and Daniel Nestor, Canada, 6-3, 6-4.

Robert Lindstedt, Sweden, and Marcin Matkowski, Poland, def. Andre Begemann and Maximilian Marterer, Germany, 7-5, 7-5.