Novak Djokovic won a record-breaking seventh ATP Finals title with a straight-set victory over home favourite Jannik Sinner. The world No 1 took an hour and 43 minutes to win 6-3, 6-3 as the Serbian continues to break records at the age of 36. It was his fourth win over Sinner, who had recorded a first-ever victory against Djokovic in the group stage in Turin and was the first Italian to reach the final. But Djokovic was in imperious form and won 14 straight points from the end of the first set to the third game of the second to leave him firmly in control and subdue the Turin crowd.