Pedzisa mutsara unotevera: Lehmann akatambira AIK muSweden Elitserien kwemwaka mishanu kubva 1982 kusvika 1987. Akasarudzwa neBoston Bruins yeNational Hockey League mu
1982 NHL Entry Draft, akabatana Boston nokuda 1987<unk>88 mwaka, uye akatamba mitambo mipfumbamwe kuti mwaka, uye mumwe 26 mitambo inotevera mwaka, kupedza vakawanda avo makore maviri achitamba nokuda Bruins 'American Hockey League affiliate Maine Mariners. Akatengeswa kuEdmonton Oilers pamberi pemwaka wa1989-90, asi akatamba mumutambo mumwe chete wekirabhu. Lehmann akatamba mumitambo 19 yemwaka wenguva dzose nemitambo mitanhatu yemitambo yeCape Breton Oilers asati adzokera kuSweden. Lehmann akatamba mamwe makore manomwe muElitserien, kunyanya kuAIK, asiwo kuMDO kwemwaka mumwe, uye mutambo mumwe weSödertälje mumwaka wake wekupedzisira, asati aenda pamudyandigere muna 1997.