Seeds

1.   Roger Federer
   Roger Federer
   Roger Federer is a Swiss professional tennis player who held the ATP no. 1 position for a record 237 consecutive weeks, and 285 weeks overall. As of 28 November 2011, he is ranked World No. 3 by the Association of Tennis Professionals . Federer has won a men's record 16 Grand Slam singles titles...
   
    (Round Robin)
2.   Novak Djokovic
   Novak Djokovic
   Novak Djokovic is a Serbian professional tennis player who has been ranked world no. 1 by the Association of Tennis Professionals since 4 July 2011. He has won four Grand Slam singles titles: the 2008 and 2011 Australian Open, the 2011 Wimbledon Championships, and the 2011 US Open...
   
    (Champion)
3.   Andy Murray (Semifinals)
4.   Nikolay Davydenko
   Nikolay Davydenko
   Nikolay Vladimirovich Davydenko is a Ukrainian-Russian tennis player. Davydenko's best result in a Grand Slam tournament has been reaching the semifinals, which he has done on four occasions: twice each at the French Open and the U.S. Open. His biggest achievement to date was winning the 2009 ATP...
   
    (Final)
5.   Andy Roddick
   Andy Roddick
   Andrew Stephen "Andy" Roddick is an American professional tennis player and a former World No. 1. He is currently the second highest-ranked American player, behind Mardy Fish....
   
    (Round Robin, withdrew due to a right ankle injury)

6.   Jo-Wilfried Tsonga (Round Robin)
   
7.   Juan Martín del Potro
   Juan Martin Del Potro
   Juan Martín del Potro is an Argentine professional tennis player. Del Potro achieved a top-10 ranking by the Association of Tennis Professionals for the first time on October 6, 2008. In January 2010, he reached a career-high ranking of world no. 4...
   
    (Round Robin)
   
8.   Gilles Simon
   Gilles Simon
   Gilles Simon is a French professional tennis player and former world no. 6. He is a nine-time winner on the ATP World Tour...
   
    (Semifinals)
   
9.   Radek Štěpánek
   Radek Štepánek
   Radek Štěpánek is a professional tennis player from the Czech Republic.-Career:Štěpánek turned professional in 1997. He started on tour as a doubles specialist, winning 12 ATP titles. Since 2002, Štěpánek has focused on being a better singles player while still playing top-level doubles...
   
    (Round Robin)
   
   

   Finals

   Red Group

   Standings are determined by: 1) Number of wins; 2) Number of matches; 3) In two-players-ties, head-to-head records; 4) In three-players-ties, percentage of sets won, or of games won; 5) Steering Committee decision.
   

   Gold Group

   Standings are determined by: 1) Number of wins; 2) Number of matches; 3) In two-players-ties, head-to-head records; 4) In three-players-ties, percentage of sets won, or of games won; 5) Steering Committee decision.
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