Benson played college basketball for coach Bobby Knight at Indiana University. With Quinn Buckner and Scott May, he led Indiana University to the NCAA Division I Men's Basketball Championship in the 1975-1976 season. That season, they were undefeated throughout the entire regular and post season. They were the last team to accomplish that in Division I Men's Basketball. After graduating from Indiana University in 1977, he was the number one draft pick of the 1977 NBA Draft by the Milwaukee Bucks. He spent 11 solid, but not particularly remarkable, seasons in the NBA.