Born in Middle Swan, Western Australia, Mann was a leg break bowler with a sharp googly.
He was almost selected for 1969–70 Australian Second XI Tour of New Zealand when the Test players were in India and South Africa.
[2] He was selected to play against the touring Indian side, being picked over Jim Higgs due in part because of his better batting.
[7] Mann was a schoolteacher for 30 years before becoming manager for the WACA, Adam Gilchrist becoming among his notable recruits to the Western Australia cricket team.
He died of pancreatic cancer at St John of God Murdoch Hospital in November 2019 aged 74.