Japan's world No. 7 Kei Nishikori advanced to the third round of the U.S. Open for the second straight year on Wednesday.Facing left-hander American Bradley Klahn for the first time, Nishikori emerged a 6-2, 4-6, 6-3, 7-5 winner from their match at Louis Armstrong Stadium. Nishikori wrapped up the match against No. 108-ranked Klahn in 2 hours, 44 minutes."When he was on a roll, he was serving very well. So it wasn't easy to return, but overall, I think I played good tennis," Nishikori said."Of course it's better to win in three sets in 1 or 2 hours, but today I learned a couple of things. S…READ FULL ARTICLE
