Andy Murray on ATP World Tour Finals and Strictly Come Dancing

Andy Murray discusses the "huge challenge" of winning this year's ATP World Tour finals, and admits he voted for his mum Judy to remain in BBC One's Strictly Come Dancing show.

The Briton will begin his campaign against Japan's Kei Nishikori at London's O2 Arena on Sunday.

Watch live coverage of Andy Murray v Kei Nishikori on BBC Two and this website from 14:00 GMT on Sunday.