A U.S. Open Series event
Monday
At The Lindner Family Tennis Center
Mason, Ohio
Purse: Men, $4.02 million (Masters 1000); Women, $2.57 million (Premier)
Surface: Hard-Outdoor
Singles
Men
First Round
Tommy Robredo (16), Spain, def. Jack Sock, United States, 7-6 (5), 6-3.
Philipp Kohlschreiber, Germany, def. Jeremy Chardy, France, 6-3, 4-6, 6-4.
Yen-hsun Lu, Taiwan, def. Denis Istomin, Uzbekistan, 6-3, 6-4.
Marinko Matosevic, Australia, def. Nicolas Mahut, France, 6-4, 7-6 (4).
Benjamin Becker, Germany, def. Ivo Karlovic, Croatia, 7-6 (5), 6-4.
Fernando Verdasco, Spain, def. Marcel Granollers, Spain, 5-7, 6-3, 7-6 (5).
Gael Monfils, France, def. Federico Delbonis, Argentina, 6-3, 3-6, 6-3.
Jerzy Janowicz, Poland, def. Teymuraz Gabashvili, Russia, 6-4, 6-4.
Joao Sousa, Portugal, def. Chase Buchanan, United States, 5-7, 7-6 (3), 7-6 (5).
Gilles Simon, France, def. Bernard Tomic, Australia, 6-3, 6-2.
John Isner (11), United States, def. Kevin Anderson, South Africa, 6-3, 6-4.
Fabio Fognini (15), Italy, def. Edouard Roger-Vasselin, France, 6-4, 4-6, 7-6 (5).
Women
First Round
Zhang Shuai, China, def. Heather Watson, Britain, 6-3, 2-6, 7-5.
Elina Svitolina, Ukraine, def. Lauren Davis, United States, 6-3, 6-2.
Kirsten Flipkens, Belgium, def .Polona Hercog, Slovenia, 6-3, 6-2.
Taylor Townsend, United States, def. Klara Koukalova, Czech Republic, 6-3, 4-6, 7-5.
Madison Keys, United States, def. Alize Cornet, France, 6-2, 6-4.
Karin Knapp, Italy, def. Belinda Bencic, Switzerland, 6-2, 7-6 (1).
Pauline Parmentier, France, def. Casey Dellacqua, Australia, 7-6 (4), 6-2.
Caroline Wozniacki (12), Denmark, def. Magdalena Rybarikova, Slovakia, 6-2, 6-3.
Ana Ivanovic (9), Serbia, def. Sorana Cirstea, Romania, 6-3, 6-2.
Anastasia Pavlyuchenkova, Russia, def. Dominika Cibulkova (11), Slovakia, 6-3, 6-3.
Flavia Pennetta (13), Italy, def. Chanelle Scheepers, South Africa, 6-3, 6-7 (3), 6-2.
Sam Stosur, Australia, def. Varvara Lepchenko, United States, 6-2, 7-5.
Doubles
Men
First Round
Jean-Julien Rojer, Netherlands, and Horia Tecau, Romania, def. Max Mirnyi, Belarus, and Mikhail Youzhny, Russia, 7-6 (3), 7-6 (6).
Steve Johnson and Sam Querrey, United States, def. Mackenzie McDonald and Tim Smyczek, United States, 6-0, 6-4.
Women
First Round
Daniela Hantuchova, Slovakia, and Barbora Zahlavova Strycova, Czech Republic, def. Lucie Hradecka, Czech Republic, and Michaella Krajicek, Netherlands, 6-2, 6-1.
Garbine Muguruza and Carla Suarez Navarro, Spain, def. Andreja Klepac, Slovenia, and Silvia Soler-Espinosa, Spain, 7-5, 6-3.
Klaudia Jans-Ignacik, Poland, and Karolina Pliskova, Czech Republic, def. Nicole Gibbs and Alison Riske, United States, 7-5, 6-4.
Raquel Kops-Jones and Abigail Spears, United States, def. Caroline Garcia, France, and Monica Niculescu, Romania, 6-2, 6-1.