However, do not forget that they are coached by Pop so it wouldn't be weird if he managed to turn this team into a Spurs like family organization in a week and manage to make them play in his system. I know it looks impossible but so is winning 5 championship in 20 years in a place like NBA, I wouldn't expect any less from him.
This was a problem for USA almost always.
I remember that happening in the 2006 world cup, when the USA was the favorite for the title and they lost against Greece because they didn't play as a team. I think the same is going to happen again and Serbia will win the title.