Shouted Murray after his fourth double fault of the afternoon .
It did not signal another collapse , and the world number two reeled off 13 of the last 15 games to win in three hours and 23 minutes .
shouted Murray after his fourth double fault of the afternoon but it did not signal another collapse , and the world number two reeled off 13 of the last 15 games to win in three hours and 23 minutes .