Steffi Graff's ex-coach issues major Grand Slam prediction on Novak Djokovic

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Steffi Graf's ex-coach Heinz Gunthardt thinks 36-year-old Novak Djokovic could win at least "three or four more Grand Slams" before ending his astonishing tennis career. Although Djokovic is in his mid-thirties, he still managed to make finals in all four Grand Slams this year and add three more Slams to his name.

As a result, Djokovic is now the all-time Grand Slam leader as he is the first-ever male player with 24 Slams. Djokovic, who has always been putting major focus and emphasis on his diet and training, is absolutely looking as someone who could play at the highest level for a few more years.

Gunthardt, who famously coaches tennis icon Graf until her retirement in 1999, was asked if Djokovic could dominate for three or four more years.

Gunthardt on Djokovic: Can win three or four more Grand Slams

"Three or four years is still a very long time.

I still think he can win three or four Grand Slams. In the end, it often happens very quickly. If you look at Nadal winning the Australian Open last year, it was one of the greatest achievements in sports history. But achieving something like that requires additional energy, which as an older player you can no longer replace after a certain day.

Experience shows that it happens really quickly. You maintain and maintain the level - and suddenly it doesn't work anymore. You slow down, there are always twenty or thirty centimeters missing. That doesn't sound like much, but it's worlds apart.

It makes a difference whether I can accelerate the ball myself or just hobble around on the defensive end," Gunthardt told Tennis Magazin. After winning this year's US Open title, Djokovic issued a stern warning to his competition, telling them he is hungry for more.

In 2024, Djokovic will be looking to win his 25th Grand Slam and become the first-ever tennis player to reach those Slam numbers.