Rafael Nadal has withdrawn from next week's Paris Masters due to a minor case of tendinitis in his left shoulder, the world number one said. The Spaniard, who has had serious problems with tendinitis in his knees over the past few years, said he sustained the injury practicing his serve at home in Mallorca this week and needed to rest for six to seven days. "It is nothing to be worried about but the doctor told me I have to spend those days doing intensive treatment and functional rehabilitation with physiotherapy," the 24-year-old said in a statement. "I'm very sorry for the tournament organizers, who've always treated me in a very special way, and especially sorry for all my fans in France and in Paris that I won't be able to be with them in one of my favorite cities in the world," he added. Nadal, the French Open, Wimbledon and U.S. Open champion, reached the semi-finals of the Paris event last year.