Everyone calm down. He picked athletic 20 year old 7 footer who can shoot. I don't think he looked that terrible, he had a put back dunk on Carlos Boozer, and then looked real good in mop up duty. You have to remember that team USA has the best players in the world and Yi will not be facing that kind of talent game in and game out in the NBA.
I say good pick (I was gonna pick him myself because I believe he's well suited for an uptempo style, which he showed in garbage time).