Good stuff.
It really is something when whites outnumber blacks something like 6 to 1 in the United States. But, in the NBA, it's more than a 4:1 ratio for blacks. So, per capita, you're looking at roughly 25 professional black basketball players in the NBA for every white player. Crazy. It's the same thing when it comes to distance running. If you look at the top 25 marathon runners of all-time, every single one is either Kenyan or Ethiopian. People can pretend all day that it's not genetics, but it clearly is.