 Federer finished the year in strong form , winning indoor titles at the Stockholm Open , Swiss Indoors , and the ATP World Tour Finals in London , which brought his tally to 66 career titles . Federer won the year @-@ end championships in London by beating rival Rafael Nadal for his fifth title at the event . He showed much of his old form , beating all contenders except Nadal in straight sets . It remains the only tournament in his career where Federer defeated all fellow members of the Big Four . Since Wimbledon 2010 , Federer had a win @-@ loss record of 34 – 4 . Federer finished in the top two for the eighth consecutive season . 
