most NBA players come from middle class families with two parent households.
You mean working class.
Middle Class and Working Class are two different thing.
Most African American basketball players either come from urban working class areas or lower urban class areas.
Chris Webber for example. Both of his parents worked decent jobs, but they didn't stay too far from the lower class area. Jalen Rose only lived 2 or 3 miles away from Chris Webber in the lower class area.
Same with Venus and Serena. Both of their parents worked, but they still lived in Compton.
Don't let me get into the whole U.S. history of housing discrimination of not letting blacks live in decent areas where only whites could live. Which still go on to this day
but that's another topic.