Ya, most definitely a calm and stable fellow compared to most. Quite naturally a bit more tight and nervous than usual when in a tight match against his first top 20 opponent. In contrast, I just caught the end of his peer Kozlov scraping past Melzer in Tallahassee — now that's anything but calmness, LOL.
In general I tend to find that his game is reasonably patient and methodical (but aggressive), and that's some of what stood out most to people in the Rio run. But today particularly after the tiebreak fell apart he was indeed making some ridiculously rash choices all over the board, trying to dropshot when not having enough time, and going for way harder angles than he needed and so on. Same thing when he gassed against PCB in Rio. Looks a bit to me like he's comfortable and loose when he's ahead or level in a match, such as against Albot in the previous round, but when he falls clearly behind against a good opponent the junior tennis makes its appearance. Possibly feels he has to do more than he really does, as Nate suggested, which is typical with the youngsters. Something he'll have to learn with experience I suppose.
Still a lot to improve of the obvious stuff, but the upside is definitely there.
Delusions of grandeur on the backhand crazy; he rarely damages on offense with that shot againt better players. Maybe work on dtl backhand, but his may be a bit spinny for that.
But its pretty clear that his FH is world class and can do a lot of destruction for the best players too.
