The German hailed the victory as the biggest his biggest title ever. "I really can't describe it. It is the biggest title I have ever won," he said after winning the ATP title which is often considered as the fifth slam.
He further added, "It's quite astonishing, winning this title, beating two such players back-to-back, Roger and Novak, in semi-finals and finals."
The 21-year-old Zverev became the youngest champion of the season-ending event since Djokovic claimed the first of his five titles a decade ago, and the first from Germany since 1995
While the runner-up Djokovic has claimed that Alexander Zverev can win more titles than him but the 21-year-old believes it's too early to talk about it as he just clinched the biggest title of his career.
On being asked the sdame, "Oh Jesus, oh my God! I mean one of those (looking at the trophy), he won five and he is one… I don't know what, 148 more titles than me, so let's not go there for now. I hope I can do great, I mean, but let's just chill out a bit…"
Zverev has billed as the player most likely to lead the sport into a new golden era once the holy trinity of Roger Federer, Djokovic and Rafael Nadal have hung up their rackets.
"It's great, but you know the future… we still got multiple and multiple years ahead and a lot of things can happen and a lot of things can change and I'll do everything I can to be on top, but, you know, the other guys are playing great tennis as well."
Zverev sunk to the ground in tears as Djokovic sportingly crossed the net to embrace the player who will now be considered among the favourites to end the Serb's run of two consecutive Grand Slam victories in Australia in two months' time.
Zverev became the youngest champion of the season-ending event since Djokovic claimed the first of his five titles a decade ago, and the first from Germany since 1995.