When the NBA prevented him because of his age , he joined the American Basketball Association instead .
In 1969 , after averaging over thirty points per game for the University of Detroit , Spencer Haywood wanted to go pro .
When the NBA prevented Spencer Haywood because of Spencer Haywood 's age , Spencer Haywood joined the American Basketball Association instead .
In 1969 , after averaging over thirty points per game for the University of Detroit , Spencer Haywood wanted to go pro .