ATP / WTA

U.S. NATIONAL INDOOR CHAMPIONSHIPS

At Memphis, Tenn.

Surface: Hard-Indoor

Singles

Men

First Round

Kei Nishikori (5), Japan, def. Illya Marchenko, Ukraine, 6-4, 7-5.

Lleyton Hewitt, Australia, def. Yen-hsun Lu, Taiwan, 2-6, 7-6 (3), 6-4.

Donald Young, United States, def. Xavier Malisse, Belgium, 5-1, retired.

Tommy Haas (6), Germany, def. Evgeny Donskoy, Russia, 7-6 (6), 6-4.

Alexandr Dolgopolov (7), Ukraine, def. Bjorn Phau, Germany, 6-3, 6-4.

Marinko Matosevic, Australia, def. Go Soeda, Japan, 7-6 (6), 6-4.

Women

Second Round

Kirsten Flipkens (1), Belgium, def. Lesia Tsurenko, Ukraine, 7-5, 3-6, 6-3.

Stefanie Voegele, Switzerland, def. Claire Feuerstein, France, 3-6, 7-6 (2), 6-1.

Marina Erakovic, New Zealand, def. Sofia Arvidsson (2), Sweden, 6-1, 3-6, 6-3.

Heather Watson (4), Britain, def. Andrea Hlavackova, Czech Republic, 2-6, 6-0, 6-3.

Sabine Lisicki (3), Germany, def. Melinda Czink, Hungary, 7-6 (0), 4-6, 6-2.

Kristina Mladenovic (8), France, def. Victoria Duval, Canada, 6-1, 3-6, 6-3.

WTA

DUBAI DUTY FREE CHAMPIONSHIPS

At Dubai, United Arab Emirates

Surface: Hard-Outdoor

Singles

Second Round

Nadia Petrova, Russia, def. Carla Suarez Navarro, Spain, 6-1, 6-0.

Agnieszka Radwanska (3), Poland, def. Yulia Putintseva, Kazakhstan, 7-5, 6-3.

Roberta Vinci, Italy, def. Angelique Kerber (4), Germany, 7-5, 6-1.

Sam Stosur (7), Australia, def. Hsieh Su-wei, Taiwan, 6-4, 6-0.

Caroline Wozniacki (8), Denmark, def. Zheng Jie, China, 6-0, 6-1.

Marion Bartoli, France, def. Serena Williams (2), United States, walkover.

Petra Kvitova (6), Czech Republic, def. Ana Ivanovic, Serbia, 7-5, 7-6 (1).

Sara Errani (5), Italy, def. Sorana Cirstea, Romania, 6-4, 6-4.