Yeah, I thought he was a former college player. My bad. Lots of Johnsons.
Gus Johnson the announcer was all-league quarterback for his high school's football team, an all-league shooting guard on the basketball team, and first baseman and catcher on the baseball team. The 1984–1985 University of Detroit Jesuit yearbook also notes that Johnson was a co-captain of both the football and basketball teams and most valuable player on the latter.
Johnson subsequently graduated from Howard University with a degree in political science in 1990 and was a four-year letter winner on Howard's baseball team.
en.wikipedia.org