Rafael Nadal said he did not need a victory over Roger Federer to feel confident in his strength. The Spaniard is preparing for his participation in the ATP Finals in London, although there are still doubts about his physical condition. He had knee problems and said he had trained for 1 hour on Wednesday and Thursday while yesterday he stayed on the court for 2 hours, gradually raising his turn. World number 1 kicks off in London with a match against David Goffen on Monday. Asked if a possible victory over Federer will have a good effect on his confidence after losing all four matches with the Swiss this season, he replied: `No, I do not need a victory over Roger to be sure. enough to be self-confident this year, and we should not forget that all of our meetings this year were on a pavement he feels more comfortable with. `It would be great to finish the year with a match predicted by football betting tips against him. `The ATP finals are one of the few tournaments that Raffa has not won, and the fast pavement in the hall they play is one of the reasons. `It`s true that I think about it, but at the same time I`ve been 13 times and always playing on such a floor, ` Nadal said. The Clay King said he was happy with the fact that he returned to first place in the world rankings and will finish the year as number 1, but that was not a goal at the start of the season. `We had a prepared program for the year and we would not change it with the idea of chasing the first place I did not aim to lead the rankings I did what I believed was best for my career The fact that I was number 1, is a great achievement, especially at my age, to finish the year at the age of 31 and a half is important to me, but that`s all, `Rafa explained. Emil Yanchev, London