The ATP World Finals start tomorrow. The World number one Andy Murray starts his campaign against Marin Cilic on Monday. Murray is hoping to win the event for the first time and end 2016 at the top of the rankings.
Murray has the tougher of the two groups with Kei Nishikori, Stan Wawrinka and Marin Cilic. While in the other group five-times champion Novak Djokovic will face Gael Monfils, Milos Raonic and Dominic Thiem.