Rafa a big 02 doubt

RAFA NADAL is a major doubt for next week’s ATP World Tour Finals in London after pulling out of the Paris Masters.

The world No.1, who had his knee strapped during his third-round win over Pablo Cuevas, withdrew before last night’s quarterfinal clash with Serbia’s Filip Krajinovic

The Spaniard, 31, said: “For me it’s not about London. It’s about the longer term. And longer term I’m going to have the treatment I believe is going to keep me playing tennis as long as possible.”

The season-ending event at The O2, which starts next Sunday, is already without the injured Andy Murray, Novak Djokovic and Stan Wawrinka. Roger Federer is favourite to win his seventh ATP title – and third in North Greenwich.

Juan Martin Del Potro cannot reach the top eight after losing to John Isner in Paris yesterday.