(Reuters) – Hosts Japan sailed into the Davis Cup quarter-finals for the first time with a 4-1 victory against an injury-plagued Canada on Sunday. Japanese number one Kei Nishikori was leading 6-2 1-0 on the indoor hard court at Tokyo’s Ariake Coliseum when his opponent Frank Dancevic retired with injury, surrendering the tie in their first meeting since 1938. Nishikori pocketed the first set in 29 minutes and broke Dancevic in the first game of the second […]