Frank Broyles, a revered football coach and athletic director who helped lift the University of Arkansas into the top ranks of college sports, most memorably by leading the Razorbacks to an undefeated season in 1964 and their only national championship, died on Monday in Fayetteville, Ark. He was 92.

A statement by his family said the cause was complications of Alzheimer’s disease.

The Razorbacks had been a doormat for powerful Texas teams in the Southwest Conference when Broyles left the head coaching job at the University of Missouri to take over the Arkansas football program in Fayetteville in 1958.

By the time he resigned in 1976, at 52, to devote all his time to his other role, as athletic director, his teams had compiled a 144-58-5 record and, in addition to the national title, won six Southwest Conference titles and 10 bowl games.

He went on to raise tens of millions of dollars for stadiums and other sports facilities, helped to build national champions in basketball and track and field, and found a national audience as a college football commentator for ABC Sports.