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Germany's Dustin Brown gestures during his tennis match against Spain's Roberto Bautista Agut in their Qualifying Men's Singles match at the 2017 US Open Tennis Tournament on August 31, 2017 in New York. / AFP PHOTO / Eduardo Munoz Alvarez (Photo credit should read EDUARDO MUNOZ ALVAREZ/AFP/Getty Images)

Germany's Dustin Brown gestures during his tennis match against Spain's Roberto Bautista Agut in their Qualifying Men's Singles match at the 2017 US Open Tennis Tournament on August 31, 2017 in New York. / AFP PHOTO / Eduardo Munoz Alvarez        (Photo credit should read EDUARDO MUNOZ ALVAREZ/AFP/Getty Images)