Novak Djokovic interrupts Grigor Dimitrov's press conference

http://youtu.be/jjhLYwjjb3c

Grigor Dimitrov had a surprise visitor during his post-match press conference at the 2014 BNP Paribas Open in Indian Wells after his win against Robin Haase, and it was none other than Serbian tennis star Novak Djokovic.

Is Djokovic the ultimate troll in the sports universe?