Ignacio Buse, Peru, def. Zizou Bergs, Belgium, 6-2, 6-4.

Lorenzo Musetti, Italy, def. Hubert Hurkacz, Poland, 7-6 (3), 7-6 (10).

Rinky Hijikata, Australia, def. Luciano Darderi, Italy, 6-2, 6-2.

Luca Van Assche, France, def. Mariano Navone, Argentina, 6-3, 7-5.

Rafael Jodar (9), Spain, def. Alejandro Tabilo, Chile, 6-2, 6-3.

Pierre-Hugues Herbert and Quentin Halys, France, def. Nikola Mektic, Croatia, and Austin Krajicek, United States, 7-6 (5), 1-6, 10-7.

Tomas Martin Etcheverry and Francisco Cerundolo, Argentina, def. Marc Polmans, Australia, and Jan Zielinski, Poland, 6-4, 1-6, 10-3.