ATP/WTA

WESTERN & SOUTHERN OPEN

A U.S. Open Series event

At Mason, Ohio

Surface: Hard-Outdoor

Singles

Men

Quarterfinals

Juan Martin del Potro (6), Argentina, def. Jeremy Chardy, France, 6-1, 6-3.

Novak Djokovic (2), Serbia, def. Marin Cilic (12), Croatia, 6-3, 6-2.

Stanislas Wawrinka, Switzerland, def. Milos Raonic, Canada, 2-6, 7-6 (5), 6-4.

Roger Federer (1), Switzerland, def. Mardy Fish (10), United States, 6-4, 7-6 (4).

Women

Third Round

Li Na (9), China, def. Johanna Larsson, Sweden, 6-2, 6-2.

Anastasia Pavlyuchenkova (17), Russia, def. Caroline Wozniacki (6), Denmark, 6-4, 6-4.

Quarterfinals

Venus Williams, United States, def. Sam Stosur (3), Australia, 6-2, 6-7 (2), 6-4.

Angelique Kerber (5), Germany, def. Serena Williams (2), United States, 6-4, 6-4.

Li Na (9), China, def. Agnieszka Radwanska (1), Poland, 6-1, 6-1.

Petra Kvitova (4), Czech Republic, def. Anastasia Pavlyuchenkova (17), Russia, 6-3, 7-6 (4).