Serena Williams crushes Elena Cibulkova at the Australian Open . Williams moves into the semifinals against Madison Keys . Keys begins an all - star clash by downing Serena Williams . Novak Djokovic , Stan Wawrinka to face off in men 's doubles .
Serena Williams crushes Dominika Cibulkova at the Australian Open . Williams moves into the semifinals against Madison Keys . Keys prevents an all-Williams clash by downing Venus Williams . Novak Djokovic , Stan Wawrinka to face off in men 's semifinals .