Novak Djokovic assured year-end No. 1

[truebluefan]

Novak Djokovic will finish the year as the top-ranked player in the world.

The ATP says the Serb clinched the year-end top spot after No. 2 Rafael Nadal lost in the third round at the Shanghai Masters on Thursday.

Nadal's loss to Florian Mayer ensured that Djokovic cannot be overtaken before the end of the year.

Read more: http://espn.go.com/tennis/story/_/i...el-nadal-loss-novak-djokovic-finish-year-no-1