Rafael Nadal has withdrawn from the Paris Masters and the Barclays ATP World Tour Finals in London because of his left knee problem.
The world No 4 has not played since his shock second-round defeat by Lukas Rosol at Wimbledon in June. Nadal missed the Olympics and the US Open after revealing he had a partial tear in his patella tendon, and it was always unlikely he would return during the indoor hard-court season, his least favourite surface.
The 26-year-old said: "It's disappointing for me to miss the last two tournaments of the season in Paris and London, but it doesn't come as a surprise. I will hopefully resume my tennis practice soon since I am making good progress with my recovery from injury."