Novak Djokovic started his bid for a third successive ATP Tour Finals title with a sublime 6-1, 6-1 victory over Marin Cilic at London's O2 Arena on Monday. (Wawrinka routs Berdych in ATP finals)
Djokovic took just 57 minutes to thrash US Open champion Cilic as the world number one extended his winning run at indoor events to 28 matches, a streak that includes 11 consecutive victories at the Tour Finals. (ATP Final: Federer in the groove, Nishikori downs Murray)
The Serb, who has already triumphed in London at Wimbledon earlier this year, is bidding to become the first man to win the Tour Finals three times in a row since Ivan Lendl from 1985 to 1987 and he looks in the mood to do just that on the evidence of his latest masterclass.