2011 ATP World Tour Finals - Wikipedia
Djokovic suffers 'worst match of year'|Tennis|chinadaily.com.cn
2011 Barclays ATP World Tour Finals November 20th | Marketing Action Plus
2011 Mutua Madrid Open - Wikipedia
ATP World Tour Finals 2011: Novak Djokovic runs out of steam against David Ferrer
/origin-imgresizer.eurosport.com/2011/11/24/784676-20837041-2560-1440.jpg "Federer plays down fuss - Eurosport")
Federer plays down fuss - Eurosport
20.11.2011. O2 Arena, London, England Roger Federer of Switzerland in action against Jo-Wilfried Tsonga
ATP ANALYSIS: Roger Federer masters Rafael Nadal at 2011 World Tour Finals
Federer beats Tsonga at ATP World Tour Finals | 21 November, 2011 | All News | News and Features | News and Events | Tennis Australia
Barclays ATP World Tour Finals - London, England | Tennis live, Tournaments, Tours
Nole receives ATP World Tour no.1 trophy! – Novak Djokovic
Is the Nitto ATP Finals the hardest event for older players to win
ATP World Tour Finals - Tennis Topics - ESPN
3,907 Atp World Tour Finals 2011 Stock Photos, High-Res Pictures, and Images - Getty Images
File:Nadal-Fish at the ATP World Tour Finals 2011.jpg - Wikimedia Commons
21.11.2011 London, England Andy Murray of United Kingdom during his singles match first round robin
Another milestone for Federer - China.org.cn
Federer beats Tsonga in Tour Finals opener | Tennis | Al Jazeera
Djokovic misses out on semis as Berdych wins|Tennis|chinadaily.com.cn
Tennis - Masters Series - ATP World Tour Finals 2011 - Results
/origin-imgresizer.eurosport.com/2011/11/24/784654-20837195-2560-1440.jpg "Federer stays perfect - Eurosport")
Federer stays perfect - Eurosport
2011 ATP World Tour Media Guide
Barclays ATP World Tour Finals 2011 | Photosport New Zealand
3,907 Atp World Tour Finals 2011 Stock Photos, High-Res Pictures, and Images - Getty Images
