John Isner reacts after a point against Philipp Kohlschreiber, of Germany, during the third round of the 2013 U.S. Open tennis tournament, Saturday, Aug. 31, 2013, in New York. (AP Photo/Darron Cummings)
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John Isner reacts after a point against Philipp Kohlschreiber, of Germany, during the third round of the 2013 U.S. Open tennis tournament, Saturday, Aug. 31, 2013, in New York. (AP Photo/Darron Cummings)
