Vie for supremacy

Djokovic, Nadal

London: Novak Djokovic can end his season with a flourish by equalling Roger Federer’s record haul of six titles at the ATP Finals and pipping Rafael Nadal to the year-end number one spot. Germany’s Alexander Zverev shocked Djokovic in last year’s final but the Serbian will start as the firm favourite after cantering to victory at last week’s Paris Masters. Djokovic and Nadal have shared the spoils at this year’s four Grand Slams, refusing to yield to the next generation.