Zverev is playing like the world No. 3 this year in my view. I'm not saying he will be as good as Djokovic, but his metoric rise to a career high of 7th after making the Montreal final is a move in the right direction. I think if he gets seeded as high as 3 or 4 in a major he wins it. With the way the tour is right now and his level it is probably bound to happen.