Wawrinka Survives Challenge From Chung
French Open champion Stan Wawrinka got through to the third round of the U.S. Open on Thursday, moving past Korean teenager Hyeon Chung in three tie-breakers, 7-6(2), 7-6(4), 7-6(6). Much like his opening round match, Wawrinka played a bit of an inconsistent match, but Chung had a lot to do with that. The 19-year-old displayed…

