Wimbledon 2011: Andy Murray v Rafael Nadal semi-final preview <br />Defending Gentlemen's Singles champion Rafael Nadal and Britain's Andy Murray practice ahead of their semi-final on Centre Court. <br /> <br />SUBSCRIBE to The Wimbledon YouTube Channel: http://www.youtube.com/wimbledon <br />LIKE Wimbledon on Facebook: https://www.facebook.com/Wimbledon <br />FOLLOW Wimbledon on Twitter: https://twitter.com/Wimbledon <br />+1 Wimbledon on Google+: https://plus.google.com/+Wimbledon <br />VISIT: http://www.wimbledon.com/en_GB/index.html
