Results Thursday at the 23-million-dollar US Open

(x indicates new result).

Women's singles, second round

x Caroline Wozniacki, 1, Denmark, def Chang Kai-Chen, Taiwan, 6-0, 6-0

Vera Zvonareva, 7, Russia, def Sabine Lisicki, Germany, 6-1, 7-6 (7-5)

x Svetlana Kuznetsova, 11, Russia, def Anastasija Sevastova, Latvia, 6-2, 6-3

Yanina Wickmayer, 15, Belgium, def Julia Goerges, Germany, 6-4, 7-5

Patty Schnyder, Switzerland, def Maria Jose Martinez Sanchez, Spain, 7-6 (7-2), 6-4

Chan Yung-Jan, Taiwan, def Tamira Paszek, Austria, 6-3, 6-3

Beatrice Capra, US, def Aravane Rezai, France, 7-5, 2-6, 6-3

x Dominika Cibulkova, Slovakia, def Kateryna Bondarenko, Ukraine, 6-2, 5-7, 7-6 (9-7)

x Lourdes Dominguez Lino, Spain, def Urszula Radwanska, Poland, 6-2, 7-5

Men's singles, second round

x Roger Federer, 2, Switzerland, def Andreas Beck, Germany, 6-3, 6-4, 6-3

x Richard Gasquet, France, def Nikolay Davydenko, 6, Russia, 6-3, 6-4, 6-2

x Kei Nishikori, Japan, def Marin Cilic, 11, Croatia, 5-7, 7-6 (8-6), 3-6, 7-6 (7-3), 6-1

Albert Montanes, Spain, def Carsten Ball, Australia, 6-3, 6-4, 6-1

Mardy Fish, US, def Pablo Cuevas, Uruguay, 7-5, 6-0, 6-2

x Arnaud Clement, France, def Eduardo Schwank, Argentina, 6-3, 5-5, retired