Sports

US Open: Day 4

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Ana Ivanovic of Serbia returns a shot against Sofia Arvidsson of Sweden during their women's singles second round match Day Four of the 2012 US Open at USTA Billie Jean King National Tennis Center in New York.

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Kim Clijsters and Kirsten Flipkens of Belgium walk off the court after being defeated by Chia-Jung Chuang and Shuai Zhang.

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Dominika Cibulkova of Slovakia returns a shot against Bojana Jovanovski of Serbia.

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Maria Kirilenko of Russia serves against Greta Arn of Hungary.

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Bojana Jovanovski of Serbia returns a shot against Dominika Cibulkova of Slovakia.

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Nikolay Davydenko of Russia returns a shot against Mardy Fish.

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U.S. Tim Smyczek returns a shot against Kei Nishikori of Japan.

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Serbia's Jelena Jankovic returns a shot to Spain's Lara Arruabarrena-Vecino in the second round of play.

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Roberta Vinci of Italy returns a shot against Yaroslava Shvedova of Kazakhstan.

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Ayumi Morita of Japan hits a return to Tsvetana Pironkova of Bulgaria.

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Jo-Wilfried Tsonga of France hits a return to Martin Klizan of Slovakia.

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Maria Kirilenko of Russia hits a return to Greta Arn of Hungary during their match.

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Daniel Brands of Germany hits a return to Marin Cilic of Croatia.

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Martin Klizan of Slovakia hits a return to Jo-Wilfried Tsonga of France.

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Nicolas Almagro of Spain lies on the court as he celebrates match point against Philipp Petzschner of Germany.