Since moving to London in 2009 more than one million people have attended the World Tour Finals, making it the world's biggest indoor tennis tournament. Former world No. 1 Roger Federer has won a record six World Tour Finals titles.
The magnificent eight of men's tennis —
Since moving to London in 2009 more than one million people have attended the World Tour Finals, making it the world's biggest indoor tennis tournament. Former world No. 1 Roger Federer has won a record six World Tour Finals titles.
Julian Finney/Getty Images
Spain's Rafael Nadal may be top of the world rankings, but he has never won a World Tour Finals title.
The magnificent eight of men's tennis —
Spain's Rafael Nadal may be top of the world rankings, but he has never won a World Tour Finals title.
EMMANUEL DUNAND/AFP/Getty Images
Serbia's Novak Djokovic is a two-time champion at the season-ending event, winning it in both 2008 and 2012.
The magnificent eight of men's tennis —
Serbia's Novak Djokovic is a two-time champion at the season-ending event, winning it in both 2008 and 2012.
Ronald Martinez/Getty Images
The closest world No. 3 David Ferrer has come to winning the competition is a defeat to Federer in the 2007 final.
The magnificent eight of men's tennis —
The closest world No. 3 David Ferrer has come to winning the competition is a defeat to Federer in the 2007 final.
MIGUEL MEDINA/AFP/Getty Images
Stanislas Wawrinka is making his World Tour Finals debut. His qualification marks the first time that two Swiss players will be competing at the season finale.
The magnificent eight of men's tennis —
Stanislas Wawrinka is making his World Tour Finals debut. His qualification marks the first time that two Swiss players will be competing at the season finale.
Clive Brunskill/Getty Images
Argentina's Juan Martin Del Potro was beaten in the first London final in 2009 by Russia's Nikolay Davydenko.
The magnificent eight of men's tennis —
Argentina's Juan Martin Del Potro was beaten in the first London final in 2009 by Russia's Nikolay Davydenko.
Fabrice Coffrini/AFP/Getty
The tournament pits the top eight players in the world against each, but world No. 9 Richard Gasquet is heading to London due to the withdrawal of Wimbledon champion Andy Murray.
The magnificent eight of men's tennis —
The tournament pits the top eight players in the world against each, but world No. 9 Richard Gasquet is heading to London due to the withdrawal of Wimbledon champion Andy Murray.
Al Bello/Getty Images
Czech Republic's Tomas Berdych enjoyed his best World Tour Finals in 2011, when he reached the semifinals.
The magnificent eight of men's tennis —
Czech Republic's Tomas Berdych enjoyed his best World Tour Finals in 2011, when he reached the semifinals.
Julian Finney/Getty Images