Aleksandr Shevchenko, Russia, def. Adrian Mannarino, France, 6-1, 6-3.

Lorenzo Sonego, Italy, def. Quentin Halys, France, 6-4, 7-6 (4).

Miomir Kecmanovic, Serbia, def. Arthur Rinderknech, France, 7-6 (4), 4-6, 6-4.

Holger Rune, Denmark, def. Zizou Bergs (8), Belgium, 6-3, 6-4.

Alex Michelsen (6), United States, def. Juan Manuel Cerundolo, Argentina, 6-3, 6-2.

Thiago Agustin Tirante, Argentina, def. Tomas Martin Etcheverry (5), Argentina, walkover.

Lorenzo Musetti (3), Italy, def. Toby Samuel, Britain, 6-1, 6-4.

Andre Goransson, Sweden, and Robert Galloway, United States, def. Marc Polmans, Australia, and Jan Zielinski (2), Poland, 6-3, 6-4.

Edouard Roger-Vasselin, France, and Nikola Mektic (1), Croatia, def. Alexander Erler, Austria, and Robert Cash, United States, 6-2, 6-1.