With the ATP Finals coming up next month, Nadal
said on his Facebook page he had made the decision to pull out
of next week's Basel tournament after getting medical advice.
Nadal's 16-match winning streak was ended in the Shanghai
Masters final on Sunday by world number two Roger Federer, who
will now have the chance to make up some ground in the rankings
"I sadly announce that I have to pull out of the Swiss Indoors
Basel, after seeing my doctor in Spain just after landing from
Shanghai," said Nadal on Tuesday.
"I am suffering from an overstressing of the knee and the
problems where already present at the tournament in Shanghai
which now forces me to take a time off on advice of my doctor."
Nadal, 31, leads Federer by 1,960 points in the rankings but the
36-year-old Swiss can gain 500 points if he wins at Basel with
another 1,000 up for grabs at the Paris Masters.
Their battle for the year-end top spot could go down to the wire
with the winner of the season-ending ATP Finals, which will be
held from Nov. 12 to 19 in London, to receive up to 1,500
Nadal and Federer have each won six titles this year, splitting
the four grand slams between them.
(Reporting by Aditi Prakash in Bengaluru; Editing by Peter
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