Do people really believe this guy can win slams?
It doesn't really matter who he is playing, his matches are usually long and close. Very tough to win 7 matches in a row like that.
With his game right now certainly not.He could produce a surprise here and there but to win lots of big matches in a slam he needs to play a lot better from the baseline and return a lot better.
Right now,he is in a similar spot like Isner.Regardless of the opponent he faces,he will have to play lots of close sets with TB`s and plenty of 4 or 5 setters from the first few rounds.