Novak Djokovic, the world No. 1 tennis player, still feels inspired by Roger Federer and Rafa Nadal, saying the rivalry between the so-called “Big Three” is a great promotion for the sport.

The “GOAT” (greatest of all time) debate in men’s tennis has divided opinions in the last decade and still remains a hot topic as the triumvirate continue to dominate the field, sharing the last 13 Grand Slam titles among them.

Federer, who will be 39 in August, leads the race with 20 Grand Slam singles titles, with Spaniard Nadal close on his heels with 19. Djokovic, the youngest of the trio, is three behind the Swiss.

“What Roger and Rafa are doing is epic. Both of these guys are legends,” the Serb told Tennis Channel. “They do inspire me and I have said this millions of times and I will say it again. They made me the player I am today. They still continue to inspire me and motivate me to be even better.

“I think these rivalries that we have are great promotion for our sport. They are really good for tennis in general and also for the upcoming generations.”

Djokovic has previously said he believes he will win the most Grand Slam titles and become the longest-reigning world number one by the time he retires.