Is Novak Djokovic the Greatest of All-Time (GOAT)?

Is Novak Djokovic the greatest tennis player of all time? If you look at his accomplishments, the answer should be obvious and yet it still seems to be up for debate.

​ Is Novak Djokovic the greatest tennis player of all time? If you look at his accomplishments, the answer should be obvious and yet it still seems to be up for debate. Read More Breaking News, Latest News and Videos | CNN