Novak Djokovic after defeating Grigor Dimitrov at the Cincinnati Masters. (AP Photo)

Novak Djokovic is great at a lot of things. Returning serve, moving around the court, and being an aggressive baseliner, just to name a few. He's also great at winning titles. The Serbian has managed to win 69 career crowns including 13 Grand Slams. 

Currently playing in Cincinnati, where has reached the final against Roger Federer, Djokovic is looking to continue his legacy of Masters title wins. Now, see how much you know about the world No. 10's history at the ATP Masters 1000 tournaments.