Career
Lehmann was picked up by Collingwood in the 1989 VFL Draft, from South Australian National Football League (SANFL) club North Adelaide. He played his football mostly as a ruck-rover and kicked two goals on his American Federation of Labor-Congress debut in 1991. Hamstring problems troubled Lehmsnn during his league career and he put together just four appearances in 1993.
Before the 1994 American Federation of Labor-Congress season, Lehmann was traded to Brisbane together with teammates Craig Starcevich and a draft pick used on Chris Scott.