The four players were included on the list of 15 by coach Ruben Magnano on Thursday. Also included was point guard Larry Taylor, who recently earned Brazilian citizenship.
Only 12 players will make it to London. But Taylor and the NBA players likely will be on the team because Magnano's list included two players who are there only to gain experience in practice and one other who has a knee injury and is not expected to recover in time.
Brazil's men last competed in the Olympics in 1996, reaching the quarterfinals in Atlanta.