Severn failed to win in Olympic trials in 1984 and 1988, and was a finalist in the trials. During the 1984 Olympic trials, he lost the final qualifying match in controversial fashion to eventual gold medal winner Lou Banach, a match that Severn credits with launching his career. "I would have retired in 1984 from competition had everything gone the way it should have gone...I should have been on the Olympic freestyle wrestling team and I should have won the gold medal. Instead, I went to Los Angeles as the alternate, and saw the guy I thought I beat win the gold medal. It was really tough for me to swallow that. That's what kept me going on." In his long career, he has held many national and international titles. He was often introduced to the UFC Octagon as holding more than 100 in total. Severn also held the US national record for victories by pin from 1976 to 1992.