New York, United States. 01st Sep, 2017. New York, NY USA - September 1, 2017: John Isner of USA returns ball during match against Mischa Zverev of Germany at US Open Championships at Billie Jean King National Tennis Center Credit: lev radin/Alamy Live News

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Keywords: championships, court, grand, isner, john, open, player, slam, sport, tennis, tournament, york