B.J. Armstrong attended Brother Rice High School in Bloomfield Township, Michigan. Armstrong had an illustrious career at the University of Iowa as the Hawkeyes' finsihing as the all-time leader in assists with 517.
Armstrong was selected by the Chicago Bulls in the first round of the 1989 NBA draft. Armstrong would go on to win three NBA championships during his career as a point guard for Chicago.
Since his NBA retirement he has served as a sports agent for multiple NBA players including point guard Derrick Rose, Draymond Green, Emmanuel Mudiay, JaVale McGee, and Denzel Valentine.