ATP Finals 2018: 5 Talking points from Alexander Zverev's stunning win over Novak Djokovic

#2 Time for Zverev to come good at the Slams?

Nitto ATP Finals - Day Eight: Zverev reacts to his Victory over Djokovic

There’s a lot of talk about Zverev’s chances at the Grand Slams. He won the final against Djokovic in one hour and 19 minutes, always looking at ease, but best-of-five sets will be a different ball game.

That said, Zverev didn't seem to tire as quickly and easily as expected by Djokovic, which is a definite sign of improvement. In the recent past he has faded away towards the finish line in best-of-five-set matches, so he can use this victory as a foundation to perform more consistently at the Slams.

He reached his first Grand Slam quarterfinal at Roland Garros this year, where he lost to Dominic Thiem. He will need to strategize better in future Slams so that he conserves his energy for the touch challenges at the business end.