All of these guys were top basketball prospects in their own country. They came to the NBA because it was the highest paying and had the best competition. Some of them faired better than others, so vote up the best and down vote the worst.
http://www.ranker.com/list/the-best-foreign-basketball-players-in-the-nba/stokified,
Dirk Nowitzki
Manu Ginóbili
Marc Gasol
Pau Gasol
Ricky Rubio
Steve Nash
Tony Parker
José Calderón
Evan Fournier
Nikola Vucevic