At USTA Billie Jean King National Tennis Center
Surface: Hardcourt outdoor
NEW YORK (AP) _ Results Monday from US Open at USTA Billie Jean King National Tennis Center (seedings in parentheses):
Andrey Rublev (9), Russia, def. Cameron Norrie (7), Britain, 6-4, 6-4, 6-4.
Jessica Pegula (8), United States, def. Petra Kvitova (21), Czech Republic, 6-3, 6-2.
Marcelo Demoliner, Brazil, and Joao Sousa, Portugal, def. Andrea Vavassori and Lorenzo Sonego, Italy, 7-6 (4), 6-4.
Robert Farah and Juan Sebastian Cabal (13), Colombia, def. Michael Venus, New Zealand, and Tim Puetz (4), Germany, 6-7 (2), 6-4, 6-3.
Storm Sanders, Australia, and Caroline Dolehide (12), United States, def. Xu Yifan and Zhaoxuan Yang (7), China, 6-2, 6-3.
Demi Schuurs, Netherlands, and Desirae Krawczyk (6), United States, def. Zhang Shuai, China, and Marta Kostyuk (11), Ukraine, 6-4, 6-4.