The age of the top players can be found on http://www.atpworldtour.com/en/rankings/singles. Among the top 10, only Nishikori & Raonic are younger than Djokovic, and Federer is older than the top 17 players.
Roger Federer is a legend of tennis, but I don't like him cause he is toooooo good, so I like who can beat him, nadal, murray and djokovic did this so I love them 3 players. IMO next legend of tennis will be DjokerNole, he will get over 17 GS in 3 years, let's see he surpass Roger king, to be the new king of tennis, although he is the king now. I think he will be GOAT-Greatest of All Time
djokovic proof that he is worth to be the new king than all the others.
Djokovic is just fortunate there isn't tough competition around like the time federer and nadal started. Mind you Federer was dominating everyone during his prime except on clay but even he managed to win one and was the second best, Djokovic lacks that consistency and is always winning even without fierce competition from murray and then loosing out when he is expected to win. He can never be the king like Rger Fed or Rafa.