Isner Win Sets Up Round of 16 Clash With Federer
American John Isner advanced to the fourth round of the U.S. Open Saturday after his opponent Jiri Vesely was forced to retire as Isner held a 6-3, 6-4 lead. Vesely repeatedly received treatment on his neck from the training staff and could no longer continue after Isner closed out the second set 6-4. “I'm playing…

