Australian Open 2014: Andy Murray buoyed by progress after injury

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Murray jokes over smashing racquet

British number one Andy Murray jokes that his racquet had to "bite the dust" when he smashed it after dropping a set in his four-set victory over Stephane Robert at the Australian Open.

Murray says his expectations at the start of the tournament were low, but describes his progress as a "good effort" after recovering from back surgery earlier this year.

The Scot faces four-time champion Roger Federer in the quarter-final and says it will be a "big match".

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