Paris: Juan Martin Del Potro`s hopes of making the ATP Tour finals are over after the Argentine announced on Sunday he was pulling out of this week`s Paris Masters.
"I felt pain in my right shoulder in Valencia and it hurt more and more as matches went on," the injury-prone Del Potro said in a statement released by Paris organisers.
"I must now think about rest."
The Tour finals in London from Nov. 20-27 bring together the eight best players in the world.
Novak Djokovic, Rafa Nadal, Andy Murray, Roger Federer and David Ferrer have qualified with the Paris Masters a last chance for others to join them.
Del Potro is 10th in the standings having failed to substantially improve his position in Valencia last week.