Career
He played for Sweden"s national junior team at the 1982 World Junior Ice Hockey Championships, and was drafted in the 11th round of the 1982 National Hockey League Entry Draft by the Boston Bruins. Lehmann played for AIK in the Swedish elite league Elitserien for five seasons before joining the Bruins for the 1987-1988 season. Lehmann played nine games for the National Hockey League club, and 26 games the following season but spent most of those two years playing for the Bruins" minor league affiliate Maine Mariners.
He was traded to the Edmonton Oilers before the 1989-1990 season, but played in only one game for the club
Lehmann played in 19 regular season games and six playoff games for the Cape Breton Oilers before returning to Sweden. Lehmann played for seven more years in the Elitserien, mostly for AIK, but also for Modo for one season, and Södertälje Saskatchewan in his final season, before retiring in 1997.