10. Manu Ginobili
Ginobili is definitely the greatest Argentinian basketball star. However, it should come as no surprise that he was so good because he came from a family of basketball players. A four-time NBA champion, Ginobili played with the San Antonio Spurs for the entirety of his career. He was also a two-time All-Star.
Furthermore, the Argentine is one of just two players to win the EuroLeague title, an NBA Championship, and an Olympic gold medal. This made Argentina the first team other than the US to win gold in 16 years. In short, it was an unbelievable accomplishment.