Mann was a standout placekicker on the 1965 and 1966 North Dakota football teams and went on to enjoy a 12-year career in the National Football League that included stints with five different teams (Denver, Cleveland, Green Bay and Oakland).
Mann was a two-time All-North Central Conference honoree for the Fighting Sioux and led the team in scoring with 70 points during their NCC Championship run in 1966. He was named to UND's All-Century in 1994.
He spent eight seasons with Detroit and left the Lions after the 1975 season as the team's all-time leading scorer. Mann would finish his career with a two-year stint in Oakland and became the only former UND player to win a Super Bowl Ring in with the Raiders in 1977. He led the NFL in scoring that season.
Mann settled in Missoula, Mont., after his professional football career and worked as a financial consultant for a couple of different firms in town.
The UND Athletics family would like to extend its deepest sympathies to Mann's family and friends.