Hayman was a lineman at the University of Delaware in Newark where he played from 1968 through the 1970 seasons. Hayman's Blue Hens garnered three consecutive Lambert Cup titles, three straight Boardwalk Bowl wins, and two straight Middle Atlantic Conference championships. Hayman was a consensus first team All-American and All-East selection at offensive guard in 1970 and was a two-time All-MAC selection. From his accomplishments at Delaware, Hayman was inducted into the state of Delaware Sports Hall of Fame. Hayman was the second athlete from the school to play in the NFL.