Graff made his only two NFL starts for the Patriots throwing two touchdowns and three interceptions.
Later he was selected in the 1976 NFL Expansion Draft by the Seattle Seahawks and split that season as a member of the Seahawks and the Pittsburgh Steelers, though he did not see any playing time in a regular season game with Seattle.
In 1978 he played for the Green Bay Packers but did not make an appearance during the regular season.
Graff is an inductee in the South Dakota Sports Hall of Fame.
This biographical article relating to an American football quarterback born in the 1950s is a stub.