John Isner will be making his debut while Sam Querrey will be making only his third appearance.

伊斯内尔是他的首次亮相，而奎罗伊将是他的第三次露面。

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Of the seven Americans in the draw, four are in Nadal's quarter, including both seeds, Mardy Fish and Sam Querrey.

本次参加法网的七个美国人中，有四位与纳达尔分在同一区，包括两位种子选手费什和奎雷。

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Viktor Troicki defeated Isner in the opening singles Friday and Djokovic beat Sam Querrey to give Serbia a 2-0 lead.

周五的男单比赛，德约科维奇先声夺人，开局便战胜了伊斯内尔，接下，德约科维奇击败奎罗伊，为塞尔维亚取得2 - 0领先优势。

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There were also wins for Thiemo de Bakker, Sam Querrey, Thomaz Bellucci and Michael Berrer.

BBC: Andy Roddick through to Cincinnati Masters second round

He also coaches a handful of male players including Jack Sock, Steven Johnson and Sam Querrey.

WSJ: Serena Williams Knocked Out of Australian Open

Sam Querrey lasted only 50 minutes in the fourth round and lost to Tomas Berdych, 6-1, 6-1.

NPR: Djokovic Upset By Tommy Haas At Key Biscayne