Djokovic is six years younger than Federer and one year below Nadal , meaning he has time on his side.
The 33-year-old won his 18th Major at the Australian Open last month and he is expected to win more Grand Slams this year.
But first Djokovic had other ambitions in his bid to end the GOAT debate once and for all.
Djokovic is the only player to have won all nine Masters titles. He has also spent the longest time at the top of the world rankings.
Helping Djokovic hit the lofty heights has been Marian Vajda’s job – and now the coach has spilled the beans on the secret to success.
Speaking of Djokovic, who is an ASICS shoe ambassador, Vajda said: “Initially, when I began working with Novak, he did not make it to No 1 as he wanted to get there too fast – I always emphasised that he had to work hard and to put in the quality of the practise to get there.
“He really did put through the sweat and patience for the sport, developing his game through pain and effort even when there was a time that he didn’t believe he could make it to No 1 for those five years between 2006 and 2011.
“I always believed in building up slowly to improve his game until Novak himself believed he could get to the level required, like in 2011 where he broke through and performed such an incredible season.
“He is physically stronger, altered his diet and changed his attitude to the practices.
“If his health remains stable, I know he can break more records, he is very motivated.”
Fellow coach Goran Ivanisevic added: “With Novak, every day is to improve he pushes to be better and when I see the amazing results, it makes me a better coach.
“Novak looks to us to provide insight to his questions and we need to be able to answer them.”
Novak partnered with ASICS to create the most technologically advanced shoe to stand up to his demanding playing style – the Court FF Novak. To play as confidently on court as Novak, head to: https://www.asics.com/gb/