Rafael Nadal will finish the year as world No.1

Acclaimed Spanish tennis player from Asturias, 27 years old, Olympic medalist and current world No. 1 Rafael Nadal said today won the season  as  a number one.
The acclaimed tennis player has remained in this position for seven months, during his last official match qualified for London Masters semifinals by defeating the Swiss
Stanislas Wawrinka , therefore , thus ensuring its title of No. 1 until the end of the year.
Nadal won 7-6 ( 5), 7-6 ( 8/6 ) the sixth player in the world and was outside the scope of the next best -placed Novak Djokovic , although he won the last tournament of the year , bringing together in London in the top eight at the time.

Thus, the Spanish semifinals qualified for Masters and made sure to stay as world number one in a season returning after seven months of injury in his left knee , and in which he was eating ground until reaching Djokovic at the top of the ranking.

The Spaniard, 27, has won 10 tournaments in 2013 , including Roland Garros ( his eighth ) and U.S. Open . With thirteen Grand Slam titles, Nadal is close to the 17 of the most successful in history, Roger Federer, but never before won a Masters.

http://www.theguardian.com/sport/2013/nov/06/rafael-nadal-atp-world-tour-finals-no1-stanislas-wawrinka