Domantas Sabonis is ready for the NBA. It became obvious midway through the season as he and Kyle Wiltjer were carrying the team through a rough patch after the loss of Przemek Karnowski. After dominating during the tournament run--especially outshining projected Top-10 pick, Jakob Poeltl, in the Round of 32--the writing was on the wall.
It doesn't require projection to see that Domantas has elite rebounding ability, a trait that will play up in the NBA immediately. When you fire up the game tape, it's also easy to see that he's a very solid defender, with a strong understanding of defensive concepts.