Jack Draper (25), Britain, def. Tomas Machac, Czechia, 6-3, 6-1, 6-2.
Daniil Medvedev (5), Russia, def. Nuno Borges, Portugal, 6-0, 6-1, 6-3.
Karolina Muchova, Czechia, def. Jasmine Paolini (5), Italy, 6-3, 6-3.
Jessica Pegula (6), United States, def. Diana Shnaider (18), Russia, 6-4, 6-2.
Mate Pavic, Croatia, and Marcelo Arevalo-Gonzalez (4), El Salvador, def. Ivan Dodig, Croatia, and Adam Pavlasek (14), Czechia, 7-5, 7-6 (4).
Nikola Mektic, Croatia, and Wesley Koolhof (11), Netherlands, def. Harri Heliovaara, Finland, and Henry Patten (6), Britain, 6-2, 6-2.
Jackson Withrow and Nathaniel Lammons (13), United States, def. Rajeev Ram, United States, and Joe Salisbury (3), Britain, 7-6 (3), 6-3.
Hao-Ching Chan, Taiwan, and Veronika Kudermetova (10), Russia, def. Harriet Dart, Britain, and Diane Parry, France, 6-4, 6-4.
Nicole Melichar-Martinez, United States, and Ellen Perez (5), Australia, def. Sara Sorribes Tormo, Spain, and Marie Bouzkova (11), Czechia, 6-2, 6-4.