He received high school All-American, three-time All-Big Eight Conference quarterback, All-Southern and All-State honors.
The team would go on to have the only undefeated season in school history and shared the national championship with the University of Southern California.
The Cowboys drafted him as a safety,[2] but after having problems playing the position in the Chicago College All-Star Game, head coach Tom Landry decided that it would be best to switch him to halfback.
The Atlanta Falcons selected him from the Cowboys roster in the 1966 NFL Expansion Draft and moved him to fullback.
[5] In 1969, Dunn played in 5 games for the Baltimore Colts, before being waived injured on October 20, after he sprained his knee.