Nadal has also been troubled by knee injuries in the past and preferred not to take any risks by continuing to play at the Paris Masters, where he has never won. It's a very demanding tour, it's not easy.' Croft also spoke about Nadal, who may not play at the ATP Finals due to a knee injury: 'When I listen to that interview it does have a sense that maybe he is thinking more towards not playing than playing. The 31-year-old Spaniard has a long history of knee issues, which often flare up on hard courts.
He added: "Of course it [withdrawal from Paris Masters] is a very tough decision for me, especially here in Paris, which has been the most important city in my career without a doubt".
"I have to pull out".
"Being No. 1 for a part of the year is great, that's obvious, but ending the year No. 1 is better still", Nadal said at a press conference at the Paris Masters. For me, it's about the longer term.
As if that wasn't enough, he went on in ruthless fashion, winning a 16th grand slam with his U.S. Open title, putting him behind Federer in total grand slam tally by just three, exactly where they started at the beginning of the year (14 to Fed's 17).
Victory for Del Potro, who was well out of the race before reaching the US Open semi-finals, would have assured him of one of the eight spots in London. "I think I know that he is sceptical on his chances to play in London", Forget said, as quoted by "Reuters". "But at the same time, a few weeks ago I didn't expect to be in this position at all".
Both players exchanged breaks early in the first set, but Nadal managed to carve out a 4-2 lead.