Impressive Novak makes history with fourth straight season-ending crown!
Novak completed dream season capturing a career-high 11th title of the year and fifth ATP World Tour Finals trophy (b.Federer 6-3, 6-4)
Nole clinches 80th win in 2015, sets Nadal semi-final clash!
Defending champion advanced into the Barclays ATP World Tour Finals last four with a 6-3, 7-5 victory over Tomas Berdych in his final Sam Smith Group round robin match at the O2 arena on Thursday.
London: Federer downs Novak, books semi-final spot
Top seed and defending champion suffered his sixth match loss of a season on Tuesday in his second RR match at the Barclays ATP World Tour Finals.
Superior Novak eases past Nishikori in London opener
Nole produced another perfectly composed performance on Sunday at the Barclays ATP World Tour Finals.