Sue Barker presents live coverage of the final of the ATP World Tour Finals between Roger Federer and Novak Djokovic from the O2 in London. History was made last year when Roger Federer won the season finale for a record sixth time, beating Jo-Wilfried Tsonga 6-3 6-7 6-3 in what was his 100th career final. Commentary comes from Andrew Castle and Tim Henman. Show less