Take a look at one of the tallest NBA players. His name is Manute Bol. Born in Sudan, Bol is 7 ft 7 or 2.31m tall. His was the tallest player in the NBA till the debut of another player, Gheorghe Muresan from Romania, who is also 7 ft 7 tall.
Young Bol was noticed by Fairleigh Dickinson University's coach who convinced the guy to move to the USA. There Bol took basketball classes in Cleveland though he never played for this state. He was invited to play for the NBA in 1985. His career ended after he got injured in 1994. By this time Bol played over 600 games and scored a total of 1,599 points blocking even more shots (over 2,000).