Nadal on quality he admires most in Djokovic: "Doesn't matter how things are going, he always keeps going till the end and that's something very difficult"

Rafael Nadal admires Djokovic in some regards and leading up to the ATP Finals the Spaniard revealed what he admires most.

They played 59 times so far in their career with Djokovic holding a slight 30-29 advantage. The rivalry is built upon tremendous respect between the players and Nadal shared ahead of the ATP Finals what qualities he admires about the Serbian:

"I think I have to say to Novak, he's able to be super professional, to control his body, to hold the passion, doesn't matter how things are going, he always keeps going till the end and that's something very difficult, especially in a super long career after all the success. To keep having the passion and love for the game, I think's it's something that I admire a lot."

They are not paired up in the same group for the ATP Finals but they might face each other if they make it out of the group.