John Isner Serve High Resolution Stock Photography and Images - Alamy
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New York, United States. 04th Sep, 2018. John Isner of USA serves during US Open 2018 quarterfinal match against Juan Martin del Potro of Argentina at USTA Billie Jean King National Tennis
Facing ATP's top servers: One man tries to return Opelka's serve - Sports Illustrated
ASB Classic - STATCHAT | John Isner showed he has the power, securing fastest serve of Men's Week with a 227 kmph bullet in his Round of 16 match v fellow American
Andy Roddick and the 16 Most Lethal Servers of the Past 30 Years | Bleacher Report | Latest News, Videos and Highlights
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