Whakaotihia te rerenga e whai ake nei: Ko Krupp tētahi o ngā kaitākaro torutoru nō Kölner Haie i te Deutsche Eishockey Liga, i kitea e Scotty Bowman, te kaiako me te kaiwhakahaere whānui o te Buffalo Sabres, nāna ia i whiriwhiri hei whiringa 214 i te
Ko te tau 1983 NHL Entry Draft. Whai muri i te wikitoria o Kölner Haie i te Tiamana Tiamana i te tau 1986, ka tukuna e te kapa a Krupp kia ahei ai ia ki te purei i te NHL. I hanga e ia tana NHL tuatahi ki te Montreal Canadiens, engari i noho ia i te waahanga whakamutunga o te wa ki nga Rochester Americans o te American Hockey League, i reira ia he mema o te roopu Amerikana i toa i te Calder Cup. I eke a Krupp i tetahi whaainga mo te wa roa i te keemu whakamutunga a Buffalo i te tau 1989-90 ki te Pittsburgh Penguins i whakakore i nga Penguins mai i te whakataetae tukinga.