A hooker, Bain was converted from a loosehead prop as an Eastwood junior, before establishing himself in first-grade for the recently formed club in 1948. He became Eastwood's first Wallaby in 1953 when he was selected for the tour of South Africa, where he made 11 appearances, but was unable to displace Jim Walsh as hooker for the Test matches.[1][2]
Bain was the Wallabies chairman of selectors between 1974 and 1990 and served as team manager during the 1976 tour of France. For his contributions to rugby, Bain held Australian Rugby Union honorary life membership and in 1993 was awarded the Medal of the Order of Australia (OAM).[1][3]