Tennis: Kei Nishikori advances to quarterfinals at Wimbledon

Japan's Kei Nishikori advanced to the quarterfinals at Wimbledon for the second straight year on Monday following a fourth-round victory over Mikhail Kukushkin of Kazakhstan.The eighth-seeded Nishikori claimed a 6-3, 3-6, 6-3, 6-4 win over the world No. 58 Kukushkin on No. 2 Court at the prestigious grass-court major. He will face second-seeded Roger Federer in his campaign to reach the Wimbledon semifinals for the first time."I kept patient although this was a tough match to close out," Nishikori said. "I was hanging in there and waiting for chances.""I'll need to elevate my game further (…READ FULL ARTICLE