Kei Nishikori of Japan rallied to beat Alejandro Falla of Colombia 4-6, 6-3, 6-2 on Thursday and reach the quarterfinals of the Chennai Open. The 98th-ranked Nishikori, who beat two-time defending champion Marin Cilic in the opening round, was down a break and trailing 3-0 in the second set when he turned the match around. Sixth-seeded Janko Tipsarevic of Serbia defeated Alexandre Kudryavtsev of Russia 6-2, 7-6 (3), and eighth-seeded Robin Haase of the Netherlands beat Yuichi Sugita of Japan 4-6, 6-3, 6-4 in other matches. Third-seeded Stanislas Wawrinka of Switzerland also overcame Belgian qualifier David Goffin 7-6 (3), 7-6 (3) to advance to the next round. Falla, who stretched Roger Federer to five sets at Wimbledon last year, overpowered his Japanese opponent in the opening set with powerful strokes from the baseline and looked in complete control after going up a break early in the second. Read more: http://sports.espn.go.com/sports/tennis/news/story?id=5996628
