His 1962 squad made the 4A state championship game, losing 26-30 to San Antonio Brackenridge.

In 1965, Mayfield took over head coaching duties at Permian High School of Odessa, Texas, where he started the school's winning tradition by beating San Antonio Lee 11-6 for the 1965 4A state championship.

[3] Mayfield was only the fifth head coach in Texas' highest classification to win a state championship in his first year.

Odessa Permian made the state finals on two more occasions in 1968 and 1970, losing to Austin Reagan each time.

In 1971 Mayfield succeeded legendary Joe E. Kerbel at his alma mater West Texas State University.