World Tour Finals: Novak Djokovic beats Kei Nishikori in semi-final

Coverage: Afternoon sessions (14:00 GMT) and first semi-final (14:00 GMT) on BBC Two & BBC website. Final on BBC Two (18:00-19:00 GMT) and BBC Three (19:00 GMT) & BBC website; live commentary of each match on 5 live sports extra, live text commentary on BBC website via Pocket http://ift.tt/1qKqReG