Isner and Bob Bryan pulled one back for the U.S. by defeating Nenad Zimonjic and Janko Tipsarevic in Saturday's doubles.

周六的双打，伊斯内尔与鲍勃·布赖恩拉携手，战胜了泽蒙季奇和蒂普萨·雷维奇组合，为美国队挽救了一点面子。

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There were also victories for Serbia's Janko Tipsarevic, Spain's number four seed David Ferrer and Canada's Milos Raonic.

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