John Robert Isner was born in April 26, 1985. He is an American professional tennis player. He achieved his career-high singles ranking of World No. 9 on March 19, 2012, and is currently the highest-ranked male American tennis player. His most famous victories were against Roger Federer in the Davis Cup encounter in February 2012, top seed Novak Djokovic at the 2012 Masters.
John Isner
