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Duffy Daugherty
Hugh Duffy Daugherty (September 8, 1915 – September 25, 1987) was an American football player and coach. He served as the head coach at Michigan State University from 1954 to 1972, compiling a record of 109–69–5. His 1965 and 1966 teams won national championships. Daugherty's tenure of 19 seasons at the helm of the Michigan State Spartans football team is the longest of any head coach in the program's history. He was inducted into the College Football Hall of Fame as a coach in 1984.
Source: Wikipedia