Zydrunas Ilgauskas is the second tallest right now and Yao Ming is the second tallest NBA player ever.
The tallest player i think is Yao Ming
The NBA player who paid for 80 cows for his wife and is the tallest ever in the NBA is Manute Bol. Bol is a native of Sudan.
Previous tallest african-american basketball player in the nba was Ralph Sampson who was 7'4