Novak Djokovic says he is motivated for the rest of this season and beyond, looking to extend his time at the top of the game.

The Serb won his 10th major at the U.S. Open, securing his position as No. 1 for a year in which he captured three Grand Slam titles and reached all four Grand Slam finals.  
But the 28-year-old is still looking for more. In Serbia to promote his foundation, he spoke to local press in Belgrade, saying, "In tennis, I have achieved everything that I had dreamed of. I have become the world No. 1 and won the Wimbledon, but now I want to stretch my prime over a few more years. If I maintain the same approach, I think that I can play on this level for a few more years."  
Djokovic, now a husband and father, finds himself having kept his drive to play and is geared up for the other big tournaments left this season.   
"There are two more Masters left until the end of the season, and the London final,” Djokovic said. “But the essence is that I do not play tennis just for victories, but because I love it and because it awakens the most positive emotions in me.”  
Djokovic also won three of the four majors in 2011.