Roger Federer won Basel but he all but lost any chance at No. 1 by withdrawing from Paris due to a back injury.
By winning Basel, Federer drew within 1,460 ranking points of Nadal with 1,000 points available at Paris and 1,500 at London.
But now, Federer will need Nadal to not win a match in Paris and then London, and then the Swiss must sweep London.
So unless something extraordinary happens, Nadal will finish the year No. 1 for a fourth time after 2008, 2010 and 2013.
Federer hasn’t finished a season No. 1 since 2009.
— ROLEX PARIS MASTERS (@RolexPMasters) October 29, 2017
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