Yabu's shot, handle, and body control looked pretty good in the highlights I've seen of the Rockets game.
Not sure he's an NBA player defensively, and like Sully and Glen Davis before him, I worry about his ability to avoid getting blocked inside. These days, being a "tweener" isn't such a bad thing, but my ongoing concern with him is his lateral quickness and vertical explosiveness.
He's an interesting prospect. Maybe he could deliver on the "Brandon Bass 2.0" promise that epic-bust Anthony Bennett seemed to have back in 2013.
I will maintain my skepticism of him as a 1st round pick, especially when more traditional wing / shooter prospects were still on the board (Luwawu, LeVert, Korkmaz), not to mention similar but more physically gifted raw big man prospects in Skal Labissiere and Henry Ellenson.
The fact that he was willing to be stashed at least one year pretty clearly held value to the Celtics, and whether or not we agree with that decision-making, we ought to credit that when wondering why he was drafted at #16.
In any case, Yabu is a fun prospect with a fun name, and I think there's plenty of reason to think he might justify (or even exceed) his draft slot. Time will tell. For this year, he'll likely put up crazy numbers in China.