Roger Federer vs Novak Djokovic during the Singles Final of the 2015 Barclays ATP World Tour Finals - O2 Arena London England. 22 November 2015 Stock Photo - Alamy
Djokovic wins World Tour Finals after Federer pulls out | CNN
Novak Djokovic Beats Roger Federer for 11th Title This Year - The New York Times
Thiem beats Federer at ATP Finals; Djokovic cruises - Sport - DAWN.COM
Djokovic Too Good For Federer in World Tour Finals Decider - Perfect Tennis
ATP World Tour Finals: Top five Federer versus Djokovic moments | Metro News
Djokovic matches Federer's record with 6th ATP Finals title | The Seattle Times
Roger Federer delivers masterclass in win over Novak Djokovic at ATP finals | ATP World Tour Finals | The Guardian
Unbeaten Federer and determined Djokovic deny Nishikori and Berdych
Roger Federer talks about retirement ahead of must win ATP finals tie against Novak Djokovic | Tennis News - Hindustan Times
ATP World Tour Finals 2014: Novak Djokovic vs Roger Federer match preview | The Independent | The Independent
Federer to face Djokovic in group stages in ATP World Tour Finals as Nadal handed Ferrer test | Daily Mail Online
Roger Federer turns on the style to down Djokovic – DW – 11/14/2019
Federer ends Djokovic's three-year winning streak at ATP World Tour Finals - Eurosport
Novak Djokovic: 'My greatest ATP Finals memory came against Roger Federer''
Roger Federer and Novak Djokovic face winner takes all battle to reach ATP Finals semis | Tennis | Sport | Express.co.uk
Roger Federer pulls out of ATP Tour Finals with back injury | Roger Federer | The Guardian
Roger Federer v Novak Djokovic: ATP World Tour Finals - Mirror Online
US Open Tennis Championships - He wins again! Novak Djokovic beat Roger Federer to win his fourth consecutive ATP World Tour Finals title and cap one of the greatest seasons in history.