Djokovic, 33, who is the current world No1, has been locked in a battle for decades with Roger Federer and Rafael Nadal in a bid to considered the greatest tennis player ever.
Djokovic has now won 18 Grand Slam titles following his Australian Open win in February.
But Nadal and Federer, both have 20 Grand slam titles.
Srdjan Djokovic (pictured below) has now come out to defend his son saying he is unnecessarily criticized while calling him a ‘great champion the world will never see again’.
Srdjan told Serbian TV channel K1: “About 15 years ago Federer attacked my son when he was still young, he was 18 or 19 years old.
“I knew someone would be there who would be better than him.
“So I said that [Federer] was a great champion, the best at the time.
“But as much as he is a great champion, Federer is not such a good man.”
He added: “It is obvious that foreign media outlets do not have the best opinion of us and think that we are constantly bothering them.
“To tell you the truth, I do not want to be part of your twisted world.
“I’m sorry you don’t like Novak. I just tell you the truth. What should I do?
“They defame him so much and say so many disgusting things about him that it is unbelievable.
“My answers are much clearer compared to how they treat this great champion, that they won’t have again in this world.”