 Stull served as head football coach at the University of Massachusetts Amherst, (1984–1985), UTEP (1986–1988), and the University of Missouri (1989–1993), compiling a career college football record of 46–65–2.A native of Davenport, Iowa, Stull was a three-year letterman at Kansas State University, where he earned bachelor's and master's degrees.Stull began his coaching career at Dubuque Senior High School in Dubuque, Iowa.