The guy is a head case, 3rd or 4th round is the best he can hope for.
He has already made two Grand Slam quarter finals at the age of 20....
Yes, he carries on like a goose but a lot of people forget, Federer was the same for many years. He similarly made two Grand Slam Quarter finals before he was 20 but a lot of people said that he was a petulant brat who needed to learn more respect on the court, have a look at him now. I'm not saying Kygrios and Federer are identical- they are different cases, but the pressure being put on this kid at the age of 20 is phenomenal. He is the best in the world at his age by some margin and it will take time for him to get to the level he needs to to win Grand Slams. The talk of him winning one in the next year is very far-fetched, but I think people don't understand just how good he is for his age.
Some of the comments in here are quite sad. I thought he played well tonight against the #6 player in the world (who happens to be 30 and has 10 years more experience and wisdom on the court) but was beaten by a stronger, physically apt and better tactical opponent. The return of serve is a worry, but it's something he will improve as he gets older and more confident in his game.