Australian Open 2014: Andy Murray v Roger Federer preview
BBC Sport previews the Australian Open quarter-final match between Andy Murray and Roger Federer.
The Wimbledon champion takes on 17-time Grand Slam winner Federer in Wednesday's night session - 08:30 GMT.
It is a repeat of last year's semi-final, when Murray won in five sets to claim his first Grand Slam victory over the Swiss.
Available to UK users only.