China Open tennis results

Following are the China Open tennis results on Friday (prefix denotes seeding)：

Men's singles quarterfinals:

2-Rafael Nadal, Spain bt Fabio Fognini, Italy, 2-6, 6-4, 6-1

4-Tomas Berdych, Czech Republic, bt 8-John Isner, United States, 7-5, 6-2

3-David Ferrer, Spain, bt 5-Richard Gasquet, France, 6-3, 6-4

1-Novak Djokovic, Serbia, bt Sam Querrey, United States, 6-1, 6-2

Women's singles quarterfinals:

8-Jelena Jankovic, Serbia, bt Lucie Safarova, Czech Republic, 6(3)-7, 6-4, 6-4

9-Petra Kvitova, Czech Republic, bt 4-Li Na, China, 4-6, 6-2, 6-4

1-Serena Williams, United States, bt 6-Caroline Wozniacki, Denmark, 6-1, 6-4

3-Agnieszka Radwanska, Poland, bt 7-Anglique Kerber, Germany, 7-6(7), 6-4

Women's doubles semifinals:

8-Cara Black, Zimbabwe/Sania Mirza, India, bt 1-Sara Errani, Italy/Roberta Vinci, Italy, 6-4, 6-4

Vera Dushevina, Russia/Arantxa Parra Santonia, Spain, bt 2-Hsieh Su-Wei, Chinese Taipei/Peng Shuai, China, 6-3, 1-6, 8-10