Tennis: Djokovic beats Federer to win London final

Serbia's Novak Djokovic kisses the trophy after beating Switzerland's Roger Federer in their final at the ATP World Tour Finals at the O2 Arena in London. REUTERS/Dylan Martinez
Serbia's Novak Djokovic kisses the trophy after beating Switzerland's Roger Federer in their final at the ATP World Tour Finals at the O2 Arena in London. REUTERS/Dylan Martinez
Serbia's Novak Djokovic has cemented his place as the number one in tennis by beating Roger Federer 7-6 7-5 to win the ATP World Tour Finals crown.

Djokovic, who began the year by winning the Australian Open, came from behind in both sets to end Swiss Federer's hopes of a seventh title at the year-ending tournament in London.

The 25-year-old hit back from 3-0 down in the first set and then trailed again in the second before claiming victory after two hours 14 minutes of absorbing action.