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Stan Wawrinka of Switzerland returns the ball against Jack Sock of the United States during men's third round Rogers Cup tennis action in Toronto on Thursday, July 28, 2016. THE CANADIAN PRESS/Nathan
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NEW YORK - SEPTEMBER 7, 2018: 2018 US Open Men' Doubles Champions Jack Sock (L) And Mike Brian Of United States During Trophy Presentation At The Billie Jean King National Tennis Center
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18 March, 2015 : Roger Federer of Switzerland serves to Jack Sock during the BNP Paribas Open at Indian Wells Tennis Garden in Indian Wells, California.Charles Baus/CSM (Cal Sport Media via AP
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Sock, Isner win first-round Davis Cup matches vs Switzerland - The Himalayan Times - Nepal's No.1 English Daily Newspaper | Nepal News, Latest Politics, Business, World, Sports, Entertainment, Travel, Life Style News
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