The Serb, who won Wimbledon in the summer, has been struggling with back and shoulder injuries since winning the U.S. Open in September. Djokovic was forced to withdraw from Paris Masters last week before the quarter-final stage, although he hopes to be in top shape to compete in London. In Group B of the French Open Rafael Nadal meeet great rival, Roger Federer of Switzerland, who comes to this event a week in the back of victories in tournaments in Basel and Paris. Group B also features Paris finalist Jo-Wilfried Tsonga and American Mardy Fish. The tournament begins Sunday and ends on November 27.
Group A: Novak Djokovic (SRB), Andy Murray (GBR), David Ferrer (ESP), Tomas Berdych (CZE)
Group B: Rafael Nadal (ESP), Roger Federer (SUI), Jo-Wilfried Tsonga (FRA), Mardy Fish (USA)