Southern was a 1955 graduate of Dallas' Sunset High School, where he won four individual State Championships and set two State and National High School Records, was an American athlete who competed mainly in the 400 meter hurdles, as well as sprints and relays.
Southern was a 1955 graduate of Dallas' Sunset High School who won multiple championships in track events such as the 400-meter hurdles, sprints, and relays; he represented America in these competitions.