Roger Federer inflicts joint worst defeat of Andy Murray 's career . Swiss took just 15 minutes to lead 6 - 0 6 - 1 . Federer victory propels Kei Sato into semifinals . Murray beat the Raonic replacement David Ferrer earlier on Thursday .
Roger Federer inflicts joint worst defeat of Andy Murray 's career . Swiss took just 56 minutes to win 6-0 6-1 . Federer victory propels Kei Nishikori into semifinals . Nishikori beat Milos Raonic replacement David Ferrer earlier on Thursday .