Mezue ahịrịokwu na-esonụ: Otu n'ime mmadụ ole na ole si Cologne na-egwu maka Kölner Haie na Deutsche Eishockey Liga, Scotty Bowman, onye nchịkwa na onye isi njikwa nke Buffalo Sabres hụrụ Krupp, onye họọrọ ya dị ka nhọrọ 214th na
1983 NHL Entry Draft. Mgbe Kölner Haie meriri asọmpi German n'afọ 1986, ndị otu ahụ hapụrụ Krupp ka o nye ya ohere igwu egwu na NHL. O mere NHL mbụ ya megide ndị Montreal Canadiens, ma nọrọ akụkụ ikpeazụ nke oge ahụ na Rochester Americans nke American Hockey League, ebe ọ bụ onye otu ndị otu America meriri Calder Cup. Krupp gbara ihe mgbaru ọsọ oge na egwuregwu ikpeazụ nke Buffalo n'oge 1989-90 megide Pittsburgh Penguins nke kpochapụrụ Penguins site na asọmpi egwuregwu.