2011 ATP World Tour Finals

The 2011 ATP World Tour Finals (also known as the 2011 Barclays ATP World Tour Finals for sponsorship reasons) was a tennis tournament that was played at the O2 Arena in London, United Kingdom between 20 and 27 November 2011. The defending champion in singles was world no. 4 Roger Federer, while the defending champions in doubles were Daniel Nestor and Nenad Zimonjić. However, they did not defend their title together as they separated after the 2010 event. Zimonjic formed a team with Michaël Llodra for the season, and Nestor partnered with Max Mirnyi. Federer successfully defended his crown, winning an unprecedented sixth title, while Nestor and Mirnyi captured the doubles title.

2011 ATP World Tour Finals

The 2011 ATP World Tour Finals (also known as the 2011 Barclays ATP World Tour Finals for sponsorship reasons) was a tennis tournament that was played at the O2 Arena in London, United Kingdom between 20 and 27 November 2011. The defending champion in singles was world no. 4 Roger Federer, while the defending champions in doubles were Daniel Nestor and Nenad Zimonjić. However, they did not defend their title together as they separated after the 2010 event. Zimonjic formed a team with Michaël Llodra for the season, and Nestor partnered with Max Mirnyi. Federer successfully defended his crown, winning an unprecedented sixth title, while Nestor and Mirnyi captured the doubles title.