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...
   
    (Semifinals)
2.   Rafael Nadal
   Rafael Nadal
   Rafael "Rafa" Nadal Parera is a Spanish professional tennis player and a former World No. 1. , he is ranked No. 2 by the Association of Tennis Professionals...
   
    (Round Robin)
3.   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...
   
    (Round Robin)
4.   Andy Murray (Round Robin)

5.   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...
   
    (Final)
   
6.   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...
   
    (Champion)
   
7.   Fernando Verdasco
   Fernando Verdasco
   Fernando Verdasco Carmona is a professional tennis player. He is currently ranked no. 22 in the world. Verdasco started playing tennis at four years of age and had a full-time coach when he was eight...
   
    (Round Robin)
   
8.   Robin Söderling
   Robin Söderling
   Robin Bo Carl Söderling is a professional tennis player from Sweden who is currently ranked number 13 in the ATP rankings. Söderling reached successive French Open finals in 2009 and 2010...
   
    (Semifinals)
   
   

   Finals

   Group A

   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.
   

   Group B

   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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